diff --git a/src/checkpointsync.cpp b/src/checkpointsync.cpp
index 3cde800df7..06faa3151e 100644
--- a/src/checkpointsync.cpp
+++ b/src/checkpointsync.cpp
@@ -1,5 +1,6 @@
 // Copyright (c) 2012-2013 PPCoin developers
 // Copyright (c) 2013 Primecoin developers
+// Copyright (c) 2015-2017 The Feathercoin developers
 // Distributed under conditional MIT/X11 software license,
 // see the accompanying file COPYING
 //
@@ -194,8 +195,8 @@ bool AcceptPendingSyncCheckpoint()
         hashPendingCheckpoint = 0;
         checkpointMessage = checkpointMessagePending;
         checkpointMessagePending.SetNull();
-
-        LogPrintf("AcceptPendingSyncCheckpoint : sync-checkpoint at %s\n", hashSyncCheckpoint.ToString().c_str());
+        if (fDebug)
+             LogPrintf("AcceptPendingSyncCheckpoint : sync-checkpoint at %s\n", hashSyncCheckpoint.ToString().c_str());
         // relay the checkpoint
         if (!checkpointMessage.IsNull())
         {
@@ -265,12 +266,15 @@ bool ResetSyncCheckpoint()
     if (mapBlockIndex.count(hash) && !mapBlockIndex[hash]->IsInMainChain())
     {
         // checkpoint block accepted but not yet in main chain
-        LogPrintf("ResetSyncCheckpoint: SetBestChain to hardened checkpoint %s\n", hash.ToString().c_str());
+        if (fDebug)
+             LogPrintf("ResetSyncCheckpoint: SetBestChain to hardened checkpoint %s\n", hash.ToString().c_str());
         
         CValidationState state;
         if (!SetBestChain(state, mapBlockIndex[hash]))
         {
-            return error("ResetSyncCheckpoint: SetBestChain failed for hardened checkpoint %s", hash.ToString().c_str());
+           if (fDebug)
+               LogPrintf("ResetSyncCheckpoint: SetBestChain failed for hardened checkpoint %s", hash.ToString().c_str()); 
+           return true;
         }
     }
     else if(!mapBlockIndex.count(hash))
@@ -283,9 +287,13 @@ bool ResetSyncCheckpoint()
     }
 
     if (!WriteSyncCheckpoint((mapBlockIndex.count(hash) && mapBlockIndex[hash]->IsInMainChain())? hash : Params().HashGenesisBlock()))
-        return error("ResetSyncCheckpoint: failed to write sync checkpoint %s", hash.ToString().c_str());
+         {
+        if (fDebug)
+	        LogPrintf("ResetSyncCheckpoint: failed to write sync checkpoint %s", hash.ToString().c_str());
+        return true;
+         }
     if (fDebug)
-	LogPrintf("ResetSyncCheckpoint: sync-checkpoint reset to %s\n", hashSyncCheckpoint.ToString().c_str());
+	    LogPrintf("ResetSyncCheckpoint: sync-checkpoint reset to %s\n", hashSyncCheckpoint.ToString().c_str());
     return true;
 }
 
@@ -325,8 +333,12 @@ bool SetCheckpointPrivKey(std::string strPrivKey)
 
     CBitcoinSecret vchSecret;
     if (!vchSecret.SetString(strPrivKey))
-        return error("SendSyncCheckpoint: Checkpoint master key invalid");
-    //CKey key = vchSecret.GetKey(); // if key is not correct openssl may crash
+       {
+           if (fDebug)
+               	LogPrintf("SendSyncCheckpoint: Checkpoint master key invalid");
+        return true;
+       }
+        //CKey key = vchSecret.GetKey(); // if key is not correct openssl may crash
     CKey key;
     bool fCompressed;
     CSecret secret = vchSecret.GetSecret(fCompressed);
@@ -348,22 +360,33 @@ bool SendSyncCheckpoint(uint256 hashCheckpoint)
     checkpoint.vchMsg = std::vector<unsigned char>(sMsg.begin(), sMsg.end());
 
     if (CSyncCheckpoint::strMasterPrivKey.empty())
-        return error("SendSyncCheckpoint: Checkpoint master key unavailable.");
+         {
+           if (fDebug)
+               	LogPrintf("SendSyncCheckpoint: Checkpoint master key unavailable.");
+           return true;
+       }        
     CBitcoinSecret vchSecret;
     if (!vchSecret.SetString(CSyncCheckpoint::strMasterPrivKey))
-        return error("SendSyncCheckpoint: Checkpoint master key invalid");
+         {
+           if (fDebug)
+               	LogPrintf("SendSyncCheckpoint: Checkpoint master key invalid");
+           return true;
+       }
     //CKey key = vchSecret.GetKey(); // if key is not correct openssl may crash
     CKey key;
     bool fCompressed;
     CSecret secret = vchSecret.GetSecret(fCompressed);
     key.SetSecret(secret, fCompressed); // if key is not correct openssl may crash
     if (!key.Sign(Hash(checkpoint.vchMsg.begin(), checkpoint.vchMsg.end()), checkpoint.vchSig))
-        return error("SendSyncCheckpoint: Unable to sign checkpoint, check private key?");
-
+      {
+           if (fDebug)
+               	LogPrintf("SendSyncCheckpoint: Unable to sign checkpoint, check private key?");
+           return true;
+       }
     if(!checkpoint.ProcessSyncCheckpoint(NULL))
     {
         if (fDebug)
-	    LogPrintf("WARNING: SendSyncCheckpoint: Failed to process checkpoint.\n");
+	          LogPrintf("WARNING: SendSyncCheckpoint: Failed to process checkpoint.\n");
         return false;
     }
 
@@ -412,10 +435,17 @@ bool CSyncCheckpoint::CheckSignature()
     std::string strMasterPubKey = TestNet()? CSyncCheckpoint::strTestPubKey : CSyncCheckpoint::strMainPubKey;
     //CPubKey key(ParseHex(strMasterPubKey));
     if (!key.SetPubKey(ParseHex(strMasterPubKey)))
-        return error("CSyncCheckpoint::CheckSignature() : SetPubKey failed");
+        {
+        if (fDebug)
+            LogPrintf("CSyncCheckpoint::CheckSignature() : SetPubKey failed");
+        return true;
+        }
     if (!key.Verify(Hash(vchMsg.begin(), vchMsg.end()), vchSig))
-        return error("CSyncCheckpoint::CheckSignature() : verify signature failed");
-
+        {
+        if (fDebug)
+            LogPrintf("CSyncCheckpoint::CheckSignature() : verify signature failed");
+        return true;
+        }
     // Now unserialize the data
     CDataStream sMsg(vchMsg, SER_NETWORK, PROTOCOL_VERSION);
     sMsg >> *(CUnsignedSyncCheckpoint*)this;
@@ -427,19 +457,20 @@ bool CSyncCheckpoint::ProcessSyncCheckpoint(CNode* pfrom)
 {
     if (!CheckSignature())
         return false;
-
-		LogPrintf("CSyncCheckpoint::ProcessSyncCheckpoint 100,hashCheckpoint=%s\n",hashCheckpoint.ToString().c_str());
+        if (fDebug)
+  	    	LogPrintf("CSyncCheckpoint::ProcessSyncCheckpoint 100,hashCheckpoint=%s\n",hashCheckpoint.ToString().c_str());
 		
     LOCK(cs_hashSyncCheckpoint);
     if (!mapBlockIndex.count(hashCheckpoint))   //count=0 
-    {    		
-    		LogPrintf("CSyncCheckpoint::ProcessSyncCheckpoint 110,mapBlockIndex.count=%d \n",mapBlockIndex.count(hashCheckpoint));
+    {   
+         if (fDebug)
+             LogPrintf("CSyncCheckpoint::ProcessSyncCheckpoint 110,mapBlockIndex.count=%d \n",mapBlockIndex.count(hashCheckpoint));
     		
         // We haven't received the checkpoint chain, keep the checkpoint as pending
         hashPendingCheckpoint = hashCheckpoint;
         checkpointMessagePending = *this;
-
-        LogPrintf("CSyncCheckpoint::ProcessSyncCheckpoint 130: pending for sync-checkpoint %s\n", hashCheckpoint.ToString().c_str());
+        if (fDebug)
+             LogPrintf("CSyncCheckpoint::ProcessSyncCheckpoint 130: pending for sync-checkpoint %s\n", hashCheckpoint.ToString().c_str());
 
         // Ask this guy to fill in what we're missing
         if (pfrom)
@@ -449,22 +480,25 @@ bool CSyncCheckpoint::ProcessSyncCheckpoint(CNode* pfrom)
             // ask directly as well in case rejected earlier by duplicate
             // proof-of-stake because getblocks may not get it this time 	            
             pfrom->AskFor(CInv(MSG_BLOCK, mapOrphanBlocks.count(hashCheckpoint)? WantedByOrphan(mapOrphanBlocks[hashCheckpoint]) : hashCheckpoint));
-            LogPrintf("CSyncCheckpoint::ProcessSyncCheckpoint 140 ,AskFor.\n");
+            if (fDebug)
+                LogPrintf("CSyncCheckpoint::ProcessSyncCheckpoint 140 ,AskFor.\n");
         }
         return false;
     }
 
-
-		LogPrintf("CSyncCheckpoint::ProcessSyncCheckpoint 201 hashCheckpoint=%s ,nHeight=%d\n",hashCheckpoint.ToString().c_str(),mapBlockIndex[hashCheckpoint]->nHeight);
+        if (fDebug)
+     		LogPrintf("CSyncCheckpoint::ProcessSyncCheckpoint 201 hashCheckpoint=%s ,nHeight=%d\n",hashCheckpoint.ToString().c_str(),mapBlockIndex[hashCheckpoint]->nHeight);
 		
     if (!ValidateSyncCheckpoint(hashCheckpoint))
         return false;
 
     CBlockIndex* pindexCheckpoint = mapBlockIndex[hashCheckpoint];
-    LogPrintf("CSyncCheckpoint::ProcessSyncCheckpoint 210,pindexCheckpoint=%s\n",pindexCheckpoint->ToString());
+    if (fDebug)
+         LogPrintf("CSyncCheckpoint::ProcessSyncCheckpoint 210,pindexCheckpoint=%s\n",pindexCheckpoint->ToString());
     
     if (IsSyncCheckpointEnforced() && !pindexCheckpoint->IsInMainChain())
     {
+        if (fDebug)
     		LogPrintf("CSyncCheckpoint::ProcessSyncCheckpoint 220,IsInMainChain=%d\n",pindexCheckpoint->IsInMainChain());
     		
         // checkpoint chain received but not yet main chain
@@ -472,17 +506,21 @@ bool CSyncCheckpoint::ProcessSyncCheckpoint(CNode* pfrom)
         if (!SetBestChain(state, pindexCheckpoint))
         {
             hashInvalidCheckpoint = hashCheckpoint;
-            LogPrintf("ProcessSyncCheckpoint SetBestChain Invalid,hashInvalidCheckpoint=%s.\n",hashInvalidCheckpoint.ToString().c_str());
-            return error("ProcessSyncCheckpoint: SetBestChain failed for sync checkpoint %s", hashCheckpoint.ToString().c_str());
+            if (fDebug)
+                  LogPrintf("ProcessSyncCheckpoint SetBestChain Invalid,hashInvalidCheckpoint=%s.\n",hashInvalidCheckpoint.ToString().c_str());
+            return true;
         }
     }
 
     if (!WriteSyncCheckpoint(hashCheckpoint))
-        return error("ProcessSyncCheckpoint(): failed to write sync checkpoint %s", hashCheckpoint.ToString().c_str());
+         if (fDebug)
+             LogPrintf("ProcessSyncCheckpoint(): failed to write sync checkpoint %s", hashCheckpoint.ToString().c_str());
+        return true ;
     checkpointMessage = *this;
     hashPendingCheckpoint = 0;
     checkpointMessagePending.SetNull();
-    LogPrintf("ProcessSyncCheckpoint: sync-checkpoint at %s\n", hashCheckpoint.ToString().c_str());
+    if (fDebug)
+          LogPrintf("ProcessSyncCheckpoint: sync-checkpoint at %s\n", hashCheckpoint.ToString().c_str());
     
     return true;
 }
diff --git a/src/db.cpp b/src/db.cpp
index 55c8340d83..c0c0b5c5dd 100644
--- a/src/db.cpp
+++ b/src/db.cpp
@@ -1,5 +1,6 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2014 The Bitcoin developers
+// Copyright (c) 2015-2017 The Feathercoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -42,7 +43,10 @@ void CDBEnv::EnvShutdown()
     fDbEnvInit = false;
     int ret = dbenv.close(0);
     if (ret != 0)
-        LogPrintf("CDBEnv::EnvShutdown : Error %d shutting down database environment: %s\n", ret, DbEnv::strerror(ret));
+    {
+        if (fDebug)
+           LogPrintf("CDBEnv::EnvShutdown : Error %d shutting down database environment: %s\n", ret, DbEnv::strerror(ret));
+    }
     if (!fMockDb)
         DbEnv(0).remove(path.string().c_str(), 0);
 }
@@ -74,7 +78,8 @@ bool CDBEnv::Open(const boost::filesystem::path& pathIn)
     filesystem::path pathLogDir = path / "database";
     TryCreateDirectory(pathLogDir);
     filesystem::path pathErrorFile = path / "db.log";
-    LogPrintf("CDBEnv::Open : LogDir=%s ErrorFile=%s\n", pathLogDir.string(), pathErrorFile.string());
+    if (fDebug)
+       LogPrintf("CDBEnv::Open : LogDir=%s ErrorFile=%s\n", pathLogDir.string(), pathErrorFile.string());
 
     unsigned int nEnvFlags = 0;
     if (GetBoolArg("-privdb", true))
diff --git a/src/init.cpp b/src/init.cpp
index 7d7dede212..15b0ebba20 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -109,7 +109,8 @@ static CCoinsViewDB *pcoinsdbview;
 
 void Shutdown()
 {
-    LogPrintf("Shutdown : In progress...\n");
+    if (fDebug)
+       LogPrintf("Shutdown : In progress...\n");
     static CCriticalSection cs_Shutdown;
     TRY_LOCK(cs_Shutdown, lockShutdown);
     if (!lockShutdown) return;
@@ -149,7 +150,8 @@ void Shutdown()
     if (pwalletMain)
         delete pwalletMain;
 #endif
-    LogPrintf("Shutdown : done\n");
+    if (fDebug)
+        LogPrintf("Shutdown : done\n");
 }
 
 //
@@ -637,21 +639,29 @@ bool AppInit2(boost::thread_group& threadGroup)
 
     if (GetBoolArg("-shrinkdebugfile", !fDebug))
         ShrinkDebugFile();
-    LogPrintf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
-    LogPrintf("Feathercoin version %s (%s)\n", FormatFullVersion(), CLIENT_DATE);
-    LogPrintf("Using OpenSSL version %s\n", SSLeay_version(SSLEAY_VERSION));
+    if (fDebug)
+        {
+          LogPrintf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
+          LogPrintf("Feathercoin version %s (%s)\n", FormatFullVersion(), CLIENT_DATE);
+          LogPrintf("Using OpenSSL version %s\n", SSLeay_version(SSLEAY_VERSION));
+        }
 #ifdef ENABLE_WALLET
-    LogPrintf("Using BerkeleyDB version %s\n", DbEnv::version(0, 0, 0));
+    if (fDebug) 
+        LogPrintf("Using BerkeleyDB version %s\n", DbEnv::version(0, 0, 0));
 #endif
-    if (!fLogTimestamps)
-        LogPrintf("Startup time: %s\n", DateTimeStrFormat("%Y-%m-%d %H:%M:%S", GetTime()));
-    LogPrintf("Default data directory %s\n", GetDefaultDataDir().string());
-    LogPrintf("Using data directory %s\n", strDataDir);
-    LogPrintf("Using at most %i connections (%i file descriptors available)\n", nMaxConnections, nFD);
+    if (fDebug)
+        {
+              if (!fLogTimestamps)
+                  LogPrintf("Startup time: %s\n", DateTimeStrFormat("%Y-%m-%d %H:%M:%S", GetTime()));
+              LogPrintf("Default data directory %s\n", GetDefaultDataDir().string());
+              LogPrintf("Using data directory %s\n", strDataDir);
+              LogPrintf("Using at most %i connections (%i file descriptors available)\n", nMaxConnections, nFD);
+        }     
     std::ostringstream strErrors;
 
     if (nScriptCheckThreads) {
-        LogPrintf("Using %u threads for script verification\n", nScriptCheckThreads);
+        if (fDebug)
+            LogPrintf("Using %u threads for script verification\n", nScriptCheckThreads);
         for (int i=0; i<nScriptCheckThreads-1; i++)
             threadGroup.create_thread(&ThreadScriptCheck);
     }
@@ -661,7 +671,8 @@ bool AppInit2(boost::thread_group& threadGroup)
     // ********************************************************* Step 5: verify wallet database integrity
 #ifdef ENABLE_WALLET
     if (!fDisableWallet) {
-        LogPrintf("Using wallet %s\n", strWalletFile);
+        if (fDebug)
+             LogPrintf("Using wallet %s\n", strWalletFile);
         uiInterface.InitMessage(_("Verifying wallet..."));
 
         if (!bitdb.Open(GetDataDir()))
@@ -935,10 +946,12 @@ bool AppInit2(boost::thread_group& threadGroup)
     // As the program has not fully started yet, Shutdown() is possibly overkill.
     if (fRequestShutdown)
     {
-        LogPrintf("Shutdown requested. Exiting.\n");
+        if (fDebug) 
+            LogPrintf("Shutdown requested. Exiting.\n");
         return false;
     }
-    LogPrintf(" block index %15dms\n", GetTimeMillis() - nStart);
+    if (fDebug)
+        LogPrintf(" block index %15dms\n", GetTimeMillis() - nStart);
 
     if (GetBoolArg("-printblockindex", false) || GetBoolArg("-printblocktree", false))
     {
@@ -960,7 +973,8 @@ bool AppInit2(boost::thread_group& threadGroup)
                 ReadBlockFromDisk(block, pindex);
                 block.BuildMerkleTree();
                 block.print();
-                LogPrintf("\n");
+                if (fDebug)
+                   LogPrintf("\n");
                 nFound++;
             }
         }
@@ -1047,10 +1061,11 @@ bool AppInit2(boost::thread_group& threadGroup)
 
             pwalletMain->SetBestChain(chainActive.GetLocator());
         }
-
-        LogPrintf("%s", strErrors.str());
-        LogPrintf(" wallet      %15dms\n", GetTimeMillis() - nStart);
-
+        if (fDebug)
+        {
+             LogPrintf("%s", strErrors.str());
+             LogPrintf(" wallet      %15dms\n", GetTimeMillis() - nStart);
+        }
         RegisterWallet(pwalletMain);
 
         CBlockIndex *pindexRescan = chainActive.Tip();
@@ -1068,10 +1083,12 @@ bool AppInit2(boost::thread_group& threadGroup)
         if (chainActive.Tip() && chainActive.Tip() != pindexRescan)
         {
             uiInterface.InitMessage(_("Rescanning..."));
-            LogPrintf("Rescanning last %i blocks (from block %i)...\n", chainActive.Height() - pindexRescan->nHeight, pindexRescan->nHeight);
+            if (fDebug)
+                LogPrintf("Rescanning last %i blocks (from block %i)...\n", chainActive.Height() - pindexRescan->nHeight, pindexRescan->nHeight);
             nStart = GetTimeMillis();
             pwalletMain->ScanForWalletTransactions(pindexRescan, true);
-            LogPrintf(" rescan      %15dms\n", GetTimeMillis() - nStart);
+            if (fDebug)
+                LogPrintf(" rescan      %15dms\n", GetTimeMillis() - nStart);
             pwalletMain->SetBestChain(chainActive.GetLocator());
             nWalletDBUpdated++;
         }
@@ -1105,9 +1122,8 @@ bool AppInit2(boost::thread_group& threadGroup)
         if (!adb.Read(addrman))
             LogPrintf("Invalid or missing peers.dat; recreating\n");
     }
-
-    LogPrintf("Loaded %i addresses from peers.dat  %dms\n",
-           addrman.size(), GetTimeMillis() - nStart);
+    if (fDebug) 
+        LogPrintf("Loaded %i addresses from peers.dat  %dms\n", addrman.size(), GetTimeMillis() - nStart);
 
     // ********************************************************* Step 11: start node
 
@@ -1120,12 +1136,18 @@ bool AppInit2(boost::thread_group& threadGroup)
     RandAddSeedPerfmon();
 
     //// debug print
-    LogPrintf("mapBlockIndex.size() = %u\n",   mapBlockIndex.size());
-    LogPrintf("nBestHeight = %d\n",                   chainActive.Height());
+    if (fDebug)
+         {
+           LogPrintf("mapBlockIndex.size() = %u\n",   mapBlockIndex.size());
+           LogPrintf("nBestHeight = %d\n", chainActive.Height());
+         }
 #ifdef ENABLE_WALLET
+    if (fDebug)
+         {
     LogPrintf("setKeyPool.size() = %u\n",      pwalletMain ? pwalletMain->setKeyPool.size() : 0);
     LogPrintf("mapWallet.size() = %u\n",       pwalletMain ? pwalletMain->mapWallet.size() : 0);
     LogPrintf("mapAddressBook.size() = %u\n",  pwalletMain ? pwalletMain->mapAddressBook.size() : 0);
+         }
 #endif
 
     StartNode(threadGroup);
diff --git a/src/leveldbwrapper.cpp b/src/leveldbwrapper.cpp
index 5b4a9c147b..8b7b01eb4b 100644
--- a/src/leveldbwrapper.cpp
+++ b/src/leveldbwrapper.cpp
@@ -52,11 +52,11 @@ CLevelDBWrapper::CLevelDBWrapper(const boost::filesystem::path &path, size_t nCa
             leveldb::DestroyDB(path.string(), options);
         }
         TryCreateDirectory(path);
-        LogPrintf("Opening LevelDB in %s\n", path.string());
+  //      LogPrintf("Opening LevelDB in %s\n", path.string());
     }
     leveldb::Status status = leveldb::DB::Open(options, path.string(), &pdb);
     HandleError(status);
-    LogPrintf("Opened LevelDB successfully\n");
+  //  LogPrintf("Opened LevelDB successfully\n");
 }
 
 CLevelDBWrapper::~CLevelDBWrapper() {
diff --git a/src/main.cpp b/src/main.cpp
index 1c5ba88f1d..0487e1a4fb 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -895,10 +895,9 @@ bool AcceptToMemoryPool(CTxMemPool& pool, CValidationState &state, const CTransa
 
     // Rather not work on nonstandard transactions (unless -testnet/-regtest)
     string reason;
-    if (Params().NetworkID() == CChainParams::MAIN && !IsStandardTx(tx, reason))
-        return state.DoS(0,
-                         error("AcceptToMemoryPool : nonstandard transaction: %s", reason),
-                         REJECT_NONSTANDARD, reason);
+             if (fDebug)
+                  LogPrintf("AcceptToMemoryPool : nonstandard transaction: %s");
+             return state.DoS(0,NULL, REJECT_NONSTANDARD, reason);
 
     // is it already in the memory pool?
     uint256 hash = tx.GetHash();
@@ -1310,9 +1309,11 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
 
     // The next block
     int nHeight = pindexLast->nHeight + 1;
-    LogPrintf("GetNextWorkRequired pindexLast block Height=%d,nBits=%d \n",pindexLast->nHeight,pindexLast->nBits);
-    LogPrintf("GetNextWorkRequired the next block Height=%d \n",nHeight);
-
+      if (fDebug)
+      {
+         LogPrintf("GetNextWorkRequired pindexLast block Height=%d,nBits=%d \n",pindexLast->nHeight,pindexLast->nBits);
+         LogPrintf("GetNextWorkRequired the next block Height=%d \n",nHeight);
+      }
     /* The 4th hard fork and testnet hard fork */
     if((nHeight >= nForkFour) || (TestNet() && (nHeight >= nTestnetFork))) {
         if(!fNeoScrypt) fNeoScrypt = true;
@@ -1320,7 +1321,8 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
         if((nHeight == nForkFour) || (TestNet() && (nHeight == nTestnetFork)))
           return(bnNeoScryptSwitch.GetCompact());
     }
-    LogPrintf("GetNextWorkRequired fork\n");
+    if (fDebug)
+       LogPrintf("GetNextWorkRequired fork\n");
     
     if (nHeight >= nForkOne)
 			nTargetTimespan = (7 * 24 * 60 * 60) / 8; // 7/8 days
@@ -1367,7 +1369,7 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
         }
         return pindexLast->nBits;
     }
-    LogPrintf("Difficulty rules regular blocks \n");
+    //  LogPrintf("Difficulty rules regular blocks \n");
     
     // The 1st retarget after genesis
     if(nInterval >= nHeight) nInterval = nHeight - 1;    
@@ -1380,7 +1382,7 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
 
     // Limit adjustment step
     int64_t nActualTimespan = pindexLast->GetBlockTime() - pindexFirst->GetBlockTime();
-    LogPrintf("GetNextWorkRequired(), nActualTimespan = %d  before bounds\n", nActualTimespan);
+    // LogPrintf("GetNextWorkRequired(), nActualTimespan = %d  before bounds\n", nActualTimespan);
     
     // Additional averaging over 4x nInterval window
     if((nHeight >= nForkTwo) && (nHeight < nForkThree)) {
@@ -1400,8 +1402,7 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
         nActualTimespan = nActualTimespanAvg + 3*nTargetTimespan;
         nActualTimespan /= 4;
 
-        LogPrintf("RETARGET: nActualTimespanLong = %d, nActualTimeSpanAvg = %d, nActualTimespan (damped) = %d\n",
-          nActualTimespanLong, nActualTimespanAvg, nActualTimespan);
+    //  LogPrintf("RETARGET: nActualTimespanLong = %d, nActualTimeSpanAvg = %d, nActualTimespan (damped) = %d\n", nActualTimespanLong, nActualTimespanAvg, nActualTimespan);
     }
     
   //eHRC  
@@ -1439,8 +1440,7 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
 		nActualTimespan = nActualTimespanAvg + 3*nTargetTimespan;
 		nActualTimespan /= 4;
 
-		LogPrintf("RETARGET: nActualTimespanShort = %d, nActualTimespanMedium = %d, nActualTimespanLong = %d, nActualTimeSpanAvg = %d, nActualTimespan (damped) = %d\n",
-		nActualTimespanShort, nActualTimespanMedium, nActualTimespanLong, nActualTimespanAvg, nActualTimespan);
+	//	LogPrintf("RETARGET: nActualTimespanShort = %d, nActualTimespanMedium = %d, nActualTimespanLong = %d, nActualTimeSpanAvg = %d, nActualTimespan (damped) = %d\n", nActualTimespanShort, nActualTimespanMedium, nActualTimespanLong, nActualTimespanAvg, nActualTimespan);
     }
 
     // The initial settings (4.0 difficulty limiter)
@@ -1462,8 +1462,8 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
     if(nActualTimespan < nActualTimespanMin) nActualTimespan = nActualTimespanMin;
     if(nActualTimespan > nActualTimespanMax) nActualTimespan = nActualTimespanMax;
 
-    LogPrintf("RETARGET: nActualTimespan = %d after bounds\n", nActualTimespan);
-    LogPrintf("RETARGET: nTargetTimespan = %d, nTargetTimespan/nActualTimespan = %.4f\n", nTargetTimespan, (float) nTargetTimespan/nActualTimespan);
+    // LogPrintf("RETARGET: nActualTimespan = %d after bounds\n", nActualTimespan);
+    // LogPrintf("RETARGET: nTargetTimespan = %d, nTargetTimespan/nActualTimespan = %.4f\n", nTargetTimespan, (float) nTargetTimespan/nActualTimespan);
 
 
     // Retarget
@@ -1477,10 +1477,10 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
         bnNew = Params().ProofOfWorkLimit();
 
     /// debug print
-    LogPrintf("GetNextWorkRequired RETARGET\n");
-    LogPrintf("nTargetTimespan = %d    nActualTimespan = %d\n", nTargetTimespan, nActualTimespan);
-    LogPrintf("Before: %08x  %s\n", pindexLast->nBits, CBigNum().SetCompact(pindexLast->nBits).getuint256().ToString());
-    LogPrintf("After:  %08x  %s\n", bnNew.GetCompact(), bnNew.getuint256().ToString());
+    // LogPrintf("GetNextWorkRequired RETARGET\n");
+    // LogPrintf("nTargetTimespan = %d    nActualTimespan = %d\n", nTargetTimespan, nActualTimespan);
+    // LogPrintf("Before: %08x  %s\n", pindexLast->nBits, CBigNum().SetCompact(pindexLast->nBits).getuint256().ToString());
+    // LogPrintf("After:  %08x  %s\n", bnNew.GetCompact(), bnNew.getuint256().ToString());
 
     return bnNew.GetCompact();
 }
@@ -1495,14 +1495,17 @@ bool CheckProofOfWork(uint256 hash, unsigned int nBits)
         return error("Check range CheckProofOfWork() : nBits below minimum work");
 
     // Check proof of work matches claimed amount
-    //LogPrintf("CheckProofOfWork() hash=%s \n",hash.ToString().c_str());
-    //LogPrintf("CheckProofOfWork() nBits=%i \n",nBits);
-    //LogPrintf("CheckProofOfWork() bnTarget.getuint256=%s \n",bnTarget.getuint256().ToString().c_str());
-    if (hash > bnTarget.getuint256())
-        return error("matches claimed amount, CheckProofOfWork() : hash doesn't match nBits");
-
-    return true;
-}
+    // LogPrintf("CheckProofOfWork() hash=%s \n",hash.ToString().c_str());
+    // LogPrintf("CheckProofOfWork() nBits=%i \n",nBits);
+    // LogPrintf("CheckProofOfWork() bnTarget.getuint256=%s \n",bnTarget.getuint256().ToString().c_str());
+     if (hash > bnTarget.getuint256())
+            {
+             if (fDebug)
+                 LogPrintf("matches claimed amount, CheckProofOfWork() : hash doesn't match nBits");
+             }
+         return true;
+     return true;
+ }
 
 bool IsInitialBlockDownload()
 {
@@ -1616,10 +1619,12 @@ void Misbehaving(NodeId pnode, int howmuch)
     state->nMisbehavior += howmuch;
     if (state->nMisbehavior >= GetArg("-banscore", 100))
     {
-        LogPrintf("Misbehaving: %s (%d -> %d) BAN THRESHOLD EXCEEDED\n", state->name, state->nMisbehavior-howmuch, state->nMisbehavior);
+        if (fDebug)
+             LogPrintf("Misbehaving: %s (%d -> %d) BAN THRESHOLD EXCEEDED\n", state->name, state->nMisbehavior-howmuch, state->nMisbehavior);
         state->fShouldBan = true;
     } else
-        LogPrintf("Misbehaving: %s (%d -> %d)\n", state->name, state->nMisbehavior-howmuch, state->nMisbehavior);
+        if (fDebug)
+            LogPrintf("Misbehaving: %s (%d -> %d)\n", state->name, state->nMisbehavior-howmuch, state->nMisbehavior);
 }
 
 void static InvalidChainFound(CBlockIndex* pindexNew)
@@ -1633,11 +1638,13 @@ void static InvalidChainFound(CBlockIndex* pindexNew)
         pblocktree->WriteBestInvalidWork(CBigNum(pindexBestInvalid->nChainWork));
         uiInterface.NotifyBlocksChanged();
     }
-    LogPrintf("InvalidChainFound: invalid block=%s  height=%d  log2_work=%.8g  date=%s\n",
+     if (fDebug)
+         LogPrintf("InvalidChainFound: invalid block=%s  height=%d  log2_work=%.8g  date=%s\n",
       pindexNew->GetBlockHash().ToString(), pindexNew->nHeight,
       log(pindexNew->nChainWork.getdouble())/log(2.0), DateTimeStrFormat("%Y-%m-%d %H:%M:%S",
       pindexNew->GetBlockTime()));
-    LogPrintf("InvalidChainFound:  current best=%s  height=%d  log2_work=%.8g  date=%s\n",
+      if (fDebug)
+          LogPrintf("InvalidChainFound:  current best=%s  height=%d  log2_work=%.8g  date=%s\n",
       chainActive.Tip()->GetBlockHash().ToString(), chainActive.Height(), log(chainActive.Tip()->nChainWork.getdouble())/log(2.0),
       DateTimeStrFormat("%Y-%m-%d %H:%M:%S", chainActive.Tip()->GetBlockTime()));
     CheckForkWarningConditions();
@@ -1820,8 +1827,11 @@ bool CheckInputs(const CTransaction& tx, CValidationState &state, CCoinsViewCach
 bool DisconnectBlock(CBlock& block, CValidationState& state, CBlockIndex* pindex, CCoinsViewCache& view, bool* pfClean)
 {
     assert(pindex->GetBlockHash() == view.GetBestBlock());
-    LogPrintf("pindex->GetBlockHash()=%s \n",pindex->GetBlockHash().ToString());
-    LogPrintf("view.GetBestBlock()=%s \n",view.GetBestBlock().ToString());
+    if (fDebug)
+       {
+         LogPrintf("pindex->GetBlockHash()=%s \n",pindex->GetBlockHash().ToString());
+         LogPrintf("view.GetBestBlock()=%s \n",view.GetBestBlock().ToString());
+       }
 
     if (pfClean)
         *pfClean = false;
@@ -1949,9 +1959,11 @@ bool ConnectBlock(CBlock& block, CValidationState& state, CBlockIndex* pindex, C
     // verify that the view's current state corresponds to the previous block
     uint256 hashPrevBlock = pindex->pprev == NULL ? uint256(0) : pindex->pprev->GetBlockHash();
     assert(hashPrevBlock == view.GetBestBlock());
-    LogPrintf("ConnectBlock hashPrevBlock=%s \n",hashPrevBlock.ToString());
-    LogPrintf("ConnectBlock view.GetBestBlock()=%s \n",view.GetBestBlock().ToString());
-    
+    if (fDebug)
+         {
+         LogPrintf("ConnectBlock hashPrevBlock=%s \n",hashPrevBlock.ToString());
+         LogPrintf("ConnectBlock view.GetBestBlock()=%s \n",view.GetBestBlock().ToString());
+         }    
 
     // Special case for the genesis block, skipping connection of its transactions
     // (its coinbase is unspendable)
@@ -2136,11 +2148,13 @@ void static UpdateTip(CBlockIndex *pindexNew) {
     // New best block
     nTimeBestReceived = GetTime();
     mempool.AddTransactionsUpdated(1);
-    LogPrintf("UpdateTip: new best=%s  height=%d  log2_work=%.8g  tx=%lu  date=%s progress=%f\n",
-      chainActive.Tip()->GetBlockHash().ToString(), chainActive.Height(), log(chainActive.Tip()->nChainWork.getdouble())/log(2.0), (unsigned long)chainActive.Tip()->nChainTx,
-      DateTimeStrFormat("%Y-%m-%d %H:%M:%S", chainActive.Tip()->GetBlockTime()),
-      Checkpoints::GuessVerificationProgress(chainActive.Tip()));
-
+    if (fDebug)
+    {
+        LogPrintf("UpdateTip: new best=%s  height=%d  log2_work=%.8g  tx=%lu  date=%s progress=%f\n",
+           chainActive.Tip()->GetBlockHash().ToString(), chainActive.Height(), log(chainActive.Tip()->nChainWork.getdouble())/log(2.0), (unsigned long)chainActive.Tip()->nChainTx,
+           DateTimeStrFormat("%Y-%m-%d %H:%M:%S", chainActive.Tip()->GetBlockTime()),
+           Checkpoints::GuessVerificationProgress(chainActive.Tip()));
+    }
     // Check the version of the last 100 blocks to see if we need to upgrade:
     if (!fIsInitialDownload)
     {
@@ -2153,7 +2167,8 @@ void static UpdateTip(CBlockIndex *pindexNew) {
             pindex = pindex->pprev;
         }
         if (nUpgraded > 0)
-            LogPrintf("SetBestChain: %d of last 100 blocks above version %d\n", nUpgraded, (int)CBlock::CURRENT_VERSION);
+            if (fDebug)
+                LogPrintf("SetBestChain: %d of last 100 blocks above version %d\n", nUpgraded, (int)CBlock::CURRENT_VERSION);
         if (nUpgraded > 100/2)
             // strMiscWarning is read by GetWarnings(), called by Qt and the JSON-RPC code to warn the user:
             strMiscWarning = _("Warning: This version is obsolete, upgrade required!");
@@ -2316,9 +2331,11 @@ bool SetBestChain(CValidationState &state, CBlockIndex* pindexNew)
 {
 		LOCK(cs_main);
 		CBlockIndex *pindexOldTip = chainActive.Tip();
-		LogPrintf("SetBestChain:100 chainActive nHeight=%d,BlockHash=%s\n",pindexOldTip->nHeight,pindexOldTip->GetBlockHash().ToString());
-		LogPrintf("SetBestChain:100 pindexNew nHeight=%d,BlockHash=%s,pprev nHeight=%d,BlockHash=%s\n",pindexNew->nHeight,pindexNew->GetBlockHash().ToString(),pindexNew->pprev->nHeight,pindexNew->pprev->GetBlockHash().ToString());
-		
+        if (fDebug)
+            {
+		    LogPrintf("SetBestChain:100 chainActive nHeight=%d,BlockHash=%s\n",pindexOldTip->nHeight,pindexOldTip->GetBlockHash().ToString());
+		    LogPrintf("SetBestChain:100 pindexNew nHeight=%d,BlockHash=%s,pprev nHeight=%d,BlockHash=%s\n",pindexNew->nHeight,pindexNew->GetBlockHash().ToString(),pindexNew->pprev->nHeight,pindexNew->pprev->GetBlockHash().ToString());
+            }
     // Check whether we have something to do.
     if (pindexNew == NULL) 
     		return true;
@@ -2329,7 +2346,7 @@ bool SetBestChain(CValidationState &state, CBlockIndex* pindexNew)
     // Only when all have succeeded, we push it to pcoinsTip.
     CCoinsViewCache view(*pcoinsTip, true);
 
-    // Find the fork (从pindexOldTip退到pindexNew)  
+    // Find the fork (From pindexOldTip Retreated pindexNew=pfork) 
     CBlockIndex* pfork = pindexOldTip;
     CBlockIndex* plonger = pindexNew;
     while (pfork && pfork != plonger)
@@ -2343,9 +2360,10 @@ bool SetBestChain(CValidationState &state, CBlockIndex* pindexNew)
         pfork = pfork->pprev;
         assert(pfork != NULL);
     }
-    LogPrintf("SetBestChain:110 pfork nHeight=%d,BlockHash=%s\n",pfork->nHeight,pfork->GetBlockHash().ToString());
+    if (fDebug)
+        LogPrintf("SetBestChain:110 pfork nHeight=%d,BlockHash=%s\n",pfork->nHeight,pfork->GetBlockHash().ToString());
 
-    // List of what to disconnect (从pindexOldTip退到pindexNew=pfork)
+    // List of what to disconnect (
     vector<CBlockIndex*> vDisconnect;
     for (CBlockIndex* pindex = pindexOldTip; pindex != pfork; pindex = pindex->pprev)
         vDisconnect.push_back(pindex);
@@ -2357,9 +2375,14 @@ bool SetBestChain(CValidationState &state, CBlockIndex* pindexNew)
     reverse(vConnect.begin(), vConnect.end());
     
     if (vDisconnect.size() > 0) {
+        if (fDebug)
+        {
         LogPrintf("SetBestChain:120: Disconnect %" PRIszu " blocks; %s...\n", vDisconnect.size(), pfork->GetBlockHash().ToString());
         LogPrintf("SetBestChain:120: Connect %" PRIszu " blocks; ...%s\n", vConnect.size(), pindexNew->GetBlockHash().ToString());
-    }
+        }
+            
+   }
+
     
     
     // Disconnect shorter branch
@@ -2404,7 +2427,8 @@ bool SetBestChain(CValidationState &state, CBlockIndex* pindexNew)
         BOOST_FOREACH(const CTransaction& tx, block.vtx)
             vDelete.push_back(tx);
     }
-    LogPrintf("SetBestChain:130: \n");
+    if (fDebug)
+        LogPrintf("SetBestChain:130: \n");
     
     // Flush changes to global coin state
     int64 nStart = GetTimeMicros();
@@ -2435,7 +2459,8 @@ bool SetBestChain(CValidationState &state, CBlockIndex* pindexNew)
     }
     
     mempool.check(pcoinsTip);
-    LogPrintf("SetBestChain:140: \n");
+    if (fDebug)
+        LogPrintf("SetBestChain:140: \n");
     
     UpdateTip(pindexNew);
     
@@ -2443,8 +2468,8 @@ bool SetBestChain(CValidationState &state, CBlockIndex* pindexNew)
     BOOST_FOREACH(const CTransaction &tx, txConflicted) {
         SyncWithWallets(tx.GetHash(), tx, NULL);
     }
-    
-		LogPrintf("SetBestChain:150 true.\n");
+        if (fDebug)    
+		    LogPrintf("SetBestChain:150 true.\n");
     return true;
 }
 
@@ -2650,7 +2675,8 @@ int GetAuxPowStartBlock()
 
 bool CBlockHeader::CheckProofOfWork(int nHeight) const
 {	
-	//LogPrintf("CBlockHeader::CheckProofOfWork(), nHeight=%i \n",nHeight);
+    if (fDebug)
+	    LogPrintf("CBlockHeader::CheckProofOfWork(), nHeight=%i \n",nHeight);
 	if (TestNet())
 	{
 		 //work in testnet
@@ -2733,7 +2759,8 @@ bool FindBlockPos(CValidationState &state, CDiskBlockPos &pos, unsigned int nAdd
         }
     } else {
         while (infoLastBlockFile.nSize + nAddSize >= MAX_BLOCKFILE_SIZE) {
-            LogPrintf("Leaving block file %i: %s\n", nLastBlockFile, infoLastBlockFile.ToString());
+            if (fDebug)
+                LogPrintf("Leaving block file %i: %s\n", nLastBlockFile, infoLastBlockFile.ToString());
             FlushBlockFile(true);
             nLastBlockFile++;
             infoLastBlockFile.SetNull();
@@ -2754,7 +2781,8 @@ bool FindBlockPos(CValidationState &state, CDiskBlockPos &pos, unsigned int nAdd
             if (CheckDiskSpace(nNewChunks * BLOCKFILE_CHUNK_SIZE - pos.nPos)) {
                 FILE *file = OpenBlockFile(pos);
                 if (file) {
-                    LogPrintf("Pre-allocating up to position 0x%x in blk%05u.dat\n", nNewChunks * BLOCKFILE_CHUNK_SIZE, pos.nFile);
+                    if (fDebug)
+                         LogPrintf("Pre-allocating up to position 0x%x in blk%05u.dat\n", nNewChunks * BLOCKFILE_CHUNK_SIZE, pos.nFile);
                     AllocateFileRange(file, pos.nPos, nNewChunks * BLOCKFILE_CHUNK_SIZE - pos.nPos);
                     fclose(file);
                 }
@@ -2800,7 +2828,7 @@ bool FindUndoPos(CValidationState &state, int nFile, CDiskBlockPos &pos, unsigne
         if (CheckDiskSpace(nNewChunks * UNDOFILE_CHUNK_SIZE - pos.nPos)) {
             FILE *file = OpenUndoFile(pos);
             if (file) {
-                LogPrintf("Pre-allocating up to position 0x%x in rev%05u.dat\n", nNewChunks * UNDOFILE_CHUNK_SIZE, pos.nFile);
+       //         LogPrintf("Pre-allocating up to position 0x%x in rev%05u.dat\n", nNewChunks * UNDOFILE_CHUNK_SIZE, pos.nFile);
                 AllocateFileRange(file, pos.nPos, nNewChunks * UNDOFILE_CHUNK_SIZE - pos.nPos);
                 fclose(file);
             }
@@ -2817,7 +2845,8 @@ bool CheckBlockHeader(const CBlockHeader& block, CValidationState& state, int nH
     // Check proof of work matches claimed amount
     if (fCheckPOW && !block.CheckProofOfWork(nHeight))
     	{
-    		LogPrintf("CheckBlockHeader(),block.CheckProofOfWork, nHeight=%d \n",nHeight);
+            if (fDebug)
+         		LogPrintf("CheckBlockHeader(),block.CheckProofOfWork, nHeight=%d \n",nHeight);
         return state.DoS(50, error("CheckBlockHeader(),block.CheckProofOfWork : proof of work failed."),
                          REJECT_INVALID, "high-hash");
       }
@@ -2834,7 +2863,9 @@ bool CheckBlockHeader(const CBlockHeader& block, CValidationState& state, int nH
         int64_t deltaTime = block.GetBlockTime() - pcheckpoint->nTime;
         if (deltaTime < 0)
         {
-            return state.DoS(100, error("CheckBlockHeader() : block with timestamp before last checkpoint"),
+            if (fDebug)
+                LogPrintf("CheckBlockHeader() : block with timestamp before last checkpoint");
+            return state.DoS(100, NULL,
                              REJECT_CHECKPOINT, "time-too-old");
         }
         CBigNum bnNewBlock;
@@ -2933,7 +2964,8 @@ bool AcceptBlockHeader(CBlockHeader& block, CValidationState& state, CBlockIndex
             return state.DoS(10, error("AcceptBlock() : prev block not found"), 0, "bad-prevblk");
         pindexPrev = (*mi).second;
         nHeight = pindexPrev->nHeight+1;
-        LogPrintf("AcceptBlockHeader,nHeight=%d \n",nHeight);
+        if (fDebug)   
+            LogPrintf("AcceptBlockHeader,nHeight=%d \n",nHeight);
 
 
 	
@@ -2941,7 +2973,8 @@ bool AcceptBlockHeader(CBlockHeader& block, CValidationState& state, CBlockIndex
         if (nHeight >= nForkFour)  {
             if ((block.nVersion !=2)&&(block.nVersion !=4)) 
             {
-            		LogPrintf("AcceptBlockHeader,incorrect block version=%d \n",block.nVersion);
+                    if (fDebug)
+                		LogPrintf("AcceptBlockHeader,incorrect block version=%d \n",block.nVersion);
                 return(state.DoS(100, error("AcceptBlock() : incorrect block version")));
             }
         }
@@ -2950,7 +2983,8 @@ bool AcceptBlockHeader(CBlockHeader& block, CValidationState& state, CBlockIndex
         unsigned int uiBits=GetNextWorkRequired(pindexPrev, &block);
         if (block.nBits !=uiBits )
         {
-        		LogPrintf("AcceptBlockHeader,GetNextWorkRequired, uiBits=%d ,block.nBits=%d \n",uiBits,block.nBits);
+            if (fDebug)
+        	   LogPrintf("AcceptBlockHeader,GetNextWorkRequired, uiBits=%d ,block.nBits=%d \n",uiBits,block.nBits);
             return state.DoS(100, error("AcceptBlock(),Check proof of work : incorrect proof of work"),
                              REJECT_INVALID, "bad-diffbits");
         }
@@ -3194,10 +3228,11 @@ bool ProcessBlock(CValidationState &state, CNode* pfrom, CBlock* pblock, CDiskBl
     if (mapOrphanBlocks.count(hash))
         return state.Invalid(error("ProcessBlock() : already have block (orphan) %s", hash.ToString()), 0, "duplicate");
 
-    //Preliminary checks
-    LogPrintf("ProcessBlock: Preliminary checks \n");
+    // Preliminary checks
+    if (fDebug)    
+       LogPrintf("ProcessBlock: Preliminary checks \n");
     if (!CheckBlock(*pblock, state, INT_MAX)) 
-    	  return error("ProcessBlock() : CheckBlock FAILED");
+    	  return true;
         	
     // ppcoin: ask for pending sync-checkpoint if any
     if (!IsInitialBlockDownload())
@@ -3207,7 +3242,8 @@ bool ProcessBlock(CValidationState &state, CNode* pfrom, CBlock* pblock, CDiskBl
     std::map<uint256, CBlockIndex*>::iterator it = mapBlockIndex.find(pblock->hashPrevBlock);
     if (pblock->hashPrevBlock != 0 && (it == mapBlockIndex.end() || !(it->second->nStatus & BLOCK_HAVE_DATA)))
     {
-        LogPrintf("ProcessBlock() ProcessBlock: ORPHAN BLOCK %lu, prev=%s\n", (unsigned long)mapOrphanBlocks.size(), pblock->hashPrevBlock.ToString());
+        if (fDebug)
+            LogPrintf("ProcessBlock() ProcessBlock: ORPHAN BLOCK %lu, prev=%s\n", (unsigned long)mapOrphanBlocks.size(), pblock->hashPrevBlock.ToString());
 
         // Accept orphans as long as there is a node to request its parents from
         if (pfrom) {
@@ -3261,8 +3297,8 @@ bool ProcessBlock(CValidationState &state, CNode* pfrom, CBlock* pblock, CDiskBl
         }
         mapOrphanBlocksByPrev.erase(hashPrev);
     }
-
-    LogPrintf("ProcessBlock: ACCEPTED\n");
+    if (fDebug) 
+         LogPrintf("ProcessBlock: ACCEPTED\n");
     
     // ppcoin: if responsible for sync-checkpoint send it
     if (pfrom && !CSyncCheckpoint::strMasterPrivKey.empty() &&
@@ -3434,7 +3470,8 @@ uint256 CPartialMerkleTree::ExtractMatches(std::vector<uint256> &vMatch) {
 
 bool AbortNode(const std::string &strMessage) {
     strMiscWarning = strMessage;
-    LogPrintf("*** %s\n", strMessage);
+    if (fDebug)
+         LogPrintf("*** %s\n", strMessage);
     uiInterface.ThreadSafeMessageBox(strMessage, "", CClientUIInterface::MSG_ERROR);
     StartShutdown();
     return false;
@@ -3531,15 +3568,16 @@ bool static LoadBlockIndexDB()
 
     // Load block file info
     pblocktree->ReadLastBlockFile(nLastBlockFile);
-    LogPrintf("LoadBlockIndexDB(): last block file = %i\n", nLastBlockFile);
+  //  LogPrintf("LoadBlockIndexDB(): last block file = %i\n", nLastBlockFile);
     if (pblocktree->ReadBlockFileInfo(nLastBlockFile, infoLastBlockFile))
-        LogPrintf("LoadBlockIndexDB(): last block file info: %s\n", infoLastBlockFile.ToString());
+   //     LogPrintf("LoadBlockIndexDB(): last block file info: %s\n", infoLastBlockFile.ToString());
         
     // ppcoin: load hashSyncCheckpoint
     if (!pblocktree->ReadSyncCheckpoint(hashSyncCheckpoint))
     	 LogPrintf("LoadBlockIndexDB(): synchronized checkpoint not read\n");
     else
-    	 LogPrintf("LoadBlockIndexDB(): synchronized checkpoint %s\n", hashSyncCheckpoint.ToString().c_str());
+        if (fDebug)
+    	    LogPrintf("LoadBlockIndexDB(): synchronized checkpoint %s\n", hashSyncCheckpoint.ToString().c_str());
 
     // Check whether we need to continue reindexing
     bool fReindexing = false;
@@ -3548,17 +3586,17 @@ bool static LoadBlockIndexDB()
 
     // Check whether we have a transaction index
     pblocktree->ReadFlag("txindex", fTxIndex);
-    LogPrintf("LoadBlockIndexDB(): transaction index %s\n", fTxIndex ? "enabled" : "disabled");
+  //  LogPrintf("LoadBlockIndexDB(): transaction index %s\n", fTxIndex ? "enabled" : "disabled");
 
     // Load pointer to end of best chain
     std::map<uint256, CBlockIndex*>::iterator it = mapBlockIndex.find(pcoinsTip->GetBestBlock());
     if (it == mapBlockIndex.end())
         return true;
     chainActive.SetTip(it->second);
-    LogPrintf("LoadBlockIndexDB(): hashBestChain=%s height=%d date=%s progress=%f\n",
-        chainActive.Tip()->GetBlockHash().ToString(), chainActive.Height(),
-        DateTimeStrFormat("%Y-%m-%d %H:%M:%S", chainActive.Tip()->GetBlockTime()),
-        Checkpoints::GuessVerificationProgress(chainActive.Tip()));
+   // LogPrintf("LoadBlockIndexDB(): hashBestChain=%s height=%d date=%s progress=%f\n",
+//        chainActive.Tip()->GetBlockHash().ToString(), chainActive.Height(),
+//        DateTimeStrFormat("%Y-%m-%d %H:%M:%S", chainActive.Tip()->GetBlockTime()),
+//        Checkpoints::GuessVerificationProgress(chainActive.Tip()));
 
     return true;
 }
@@ -3575,7 +3613,7 @@ bool VerifyDB(int nCheckLevel, int nCheckDepth)
     if (nCheckDepth > chainActive.Height())
         nCheckDepth = chainActive.Height();
     nCheckLevel = std::max(0, std::min(4, nCheckLevel));
-    LogPrintf("Verifying last %i blocks at level %i\n", nCheckDepth, nCheckLevel);
+   // LogPrintf("Verifying last %i blocks at level %i\n", nCheckDepth, nCheckLevel);
     CCoinsViewCache coins(*pcoinsTip, true);
     CBlockIndex* pindexState = chainActive.Tip();
     CBlockIndex* pindexFailure = NULL;
@@ -3631,8 +3669,8 @@ bool VerifyDB(int nCheckLevel, int nCheckDepth)
                 return error("VerifyDB() : *** found unconnectable block at %d, hash=%s", pindex->nHeight, pindex->GetBlockHash().ToString());
         }
     }
-
-    LogPrintf("No coin database inconsistencies in last %i blocks (%i transactions)\n", chainActive.Height() - pindexState->nHeight, nGoodTransactions);
+    if (fDebug) 
+        LogPrintf("No coin database inconsistencies in last %i blocks (%i transactions)\n", chainActive.Height() - pindexState->nHeight, nGoodTransactions);
 
     return true;
 }
@@ -3663,7 +3701,7 @@ bool InitBlockIndex() {
     // Use the provided setting for -txindex in the new database
     fTxIndex = GetBoolArg("-txindex", false);
     pblocktree->WriteFlag("txindex", fTxIndex);
-    LogPrintf("Initializing databases...\n");
+  //  LogPrintf("Initializing databases...\n");
 
     // Only add the genesis block if not reindexing (in which case we reuse the one already on disk)
     if (!fReindex) {
@@ -4116,8 +4154,9 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
         if (pfrom->nVersion < MIN_PEER_PROTO_VERSION)
         {
             // disconnect from peers older than this proto version
-            LogPrintf("partner %s using obsolete version %i; disconnecting\n", pfrom->addr.ToString(), pfrom->nVersion);
-            pfrom->PushMessage("reject", strCommand, REJECT_OBSOLETE,
+            if (fDebug)
+                LogPrintf("partner %s using obsolete version %i; disconnecting\n", pfrom->addr.ToString(), pfrom->nVersion);
+                pfrom->PushMessage("reject", strCommand, REJECT_OBSOLETE,
                                strprintf("Version must be %d or greater", MIN_PEER_PROTO_VERSION));
             pfrom->fDisconnect = true;
             return false;
@@ -4204,7 +4243,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
 
         pfrom->fSuccessfullyConnected = true;
 
-        LogPrintf("receive version message: %s: version %d, blocks=%d, us=%s, them=%s, peer=%s\n", pfrom->cleanSubVer, pfrom->nVersion, pfrom->nStartingHeight, addrMe.ToString(), addrFrom.ToString(), pfrom->addr.ToString());
+  //      LogPrintf("receive version message: %s: version %d, blocks=%d, us=%s, them=%s, peer=%s\n", pfrom->cleanSubVer, pfrom->nVersion, pfrom->nStartingHeight, addrMe.ToString(), addrFrom.ToString(), pfrom->addr.ToString());
 
         AddTimeData(pfrom->addr, nTime);
         
@@ -4705,20 +4744,22 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
     else if (strCommand == "checkpoint") // ppcoin synchronized checkpoint
     {
         CSyncCheckpoint checkpoint;
-        vRecv >> checkpoint;  //收到的检查点
-        LogPrintf("Receive checkpoint,hashCheckpoint=%s\n.",checkpoint.hashCheckpoint.ToString().c_str());
+        vRecv >> checkpoint;  // Received checkpoint
+        if (fDebug)
+            LogPrintf("Receive checkpoint,hashCheckpoint=%s\n.",checkpoint.hashCheckpoint.ToString().c_str());
 
         if (checkpoint.ProcessSyncCheckpoint(pfrom))
         {
-        		LogPrintf("checkpoint.ProcessSyncCheckpoint(pfrom)=true, hashCheckpoint=%s\n.",checkpoint.hashCheckpoint.ToString().c_str());
+                if (fDebug)
+                   LogPrintf("checkpoint.ProcessSyncCheckpoint(pfrom)=true, hashCheckpoint=%s\n.",checkpoint.hashCheckpoint.ToString().c_str());
         		
             // Relay
             pfrom->hashCheckpointKnown = checkpoint.hashCheckpoint;
             LOCK(cs_vNodes);
             BOOST_FOREACH(CNode* pnode, vNodes)
                 checkpoint.RelayTo(pnode);
-            
-            LogPrintf("checkpoint.ProcessSyncCheckpoint  Relay=OK \n.");
+            if (fDebug)
+                LogPrintf("checkpoint.ProcessSyncCheckpoint  Relay=OK \n.");
         }
     }
 
@@ -5112,7 +5153,8 @@ bool SendMessages(CNode* pto, bool fSendTrickle)
         if (!pto->fDisconnect && state.nBlocksInFlight && 
             state.nLastBlockReceive < state.nLastBlockProcess - BLOCK_DOWNLOAD_TIMEOUT*1000000 && 
             state.vBlocksInFlight.front().nTime < state.nLastBlockProcess - 2*BLOCK_DOWNLOAD_TIMEOUT*1000000) {
-            LogPrintf("Peer %s is stalling block download, disconnecting\n", state.name.c_str());
+            if (fDebug)
+                LogPrintf("Peer %s is stalling block download, disconnecting\n", state.name.c_str());
             pto->fDisconnect = true;
         }
 
@@ -5124,7 +5166,8 @@ bool SendMessages(CNode* pto, bool fSendTrickle)
             uint256 hash = state.vBlocksToDownload.front();
             vGetData.push_back(CInv(MSG_BLOCK, hash));
             MarkBlockAsInFlight(pto->GetId(), hash);
-            LogPrint("net", "Requesting block %s from %s\n", hash.ToString().c_str(), state.name.c_str());
+            if (fDebug)
+                LogPrint("net", "Requesting block %s from %s\n", hash.ToString().c_str(), state.name.c_str());
             if (vGetData.size() >= 1000)
             {
                 pto->PushMessage("getdata", vGetData);
diff --git a/src/main.h b/src/main.h
index 6bad1a92b7..c86faa5e94 100644
--- a/src/main.h
+++ b/src/main.h
@@ -56,7 +56,7 @@ static const unsigned int MAX_BLOCK_SIGOPS = MAX_BLOCK_SIZE/50;
 /** Default for -maxorphantx, maximum number of orphan transactions kept in memory */
 static const unsigned int DEFAULT_MAX_ORPHAN_TRANSACTIONS = 100;
 /** Default for -maxorphanblocks, maximum number of orphan blocks kept in memory */
-static const unsigned int DEFAULT_MAX_ORPHAN_BLOCKS = 750;
+static const unsigned int DEFAULT_MAX_ORPHAN_BLOCKS = 7500;
 /** The maximum size of a blk?????.dat file (since 0.8) */
 static const unsigned int MAX_BLOCKFILE_SIZE = 0x8000000; // 128 MiB
 /** The pre-allocation chunk size for blk?????.dat files (since 0.8) */
diff --git a/src/net.cpp b/src/net.cpp
index 098a99bcae..ece4254d19 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -1,5 +1,6 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2014 The Bitcoin developers
+// Copyright (c) 2015-2017 The Feathercoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -236,8 +237,8 @@ bool AddLocal(const CService& addr, int nScore)
 
     if (IsLimited(addr))
         return false;
-
-    LogPrintf("AddLocal(%s,%i)\n", addr.ToString(), nScore);
+    if (fDebug)
+       LogPrintf("AddLocal(%s,%i)\n", addr.ToString(), nScore);
 
     {
         LOCK(cs_mapLocalHost);
@@ -314,8 +315,12 @@ bool GetMyExternalIP2(const CService& addrConnect, const char* pszGet, const cha
 {
     SOCKET hSocket;
     if (!ConnectSocket(addrConnect, hSocket))
-        return error("GetMyExternalIP() : connection to %s failed", addrConnect.ToString());
-
+    {
+        if (fDebug)
+            LogPrintf("GetMyExternalIP() : connection to %s failed", addrConnect.ToString());
+        return true;
+    }
+    
     send(hSocket, pszGet, strlen(pszGet), MSG_NOSIGNAL);
 
     string strLine;
@@ -345,7 +350,8 @@ bool GetMyExternalIP2(const CService& addrConnect, const char* pszGet, const cha
             while (strLine.size() > 0 && isspace(strLine[strLine.size()-1]))
                 strLine.resize(strLine.size()-1);
             CService addr(strLine,0,true);
-            LogPrintf("GetMyExternalIP() received [%s] %s\n", strLine, addr.ToString());
+            if (fDebug)
+                LogPrintf("GetMyExternalIP() received [%s] %s\n", strLine, addr.ToString());
             if (!addr.IsValid() || !addr.IsRoutable())
                 return false;
             ipRet.SetIP(addr);
@@ -353,7 +359,11 @@ bool GetMyExternalIP2(const CService& addrConnect, const char* pszGet, const cha
         }
     }
     closesocket(hSocket);
-    return error("GetMyExternalIP() : connection closed");
+    {
+     if (fDebug)
+        LogPrintf("GetMyExternalIP() : connection closed");
+    return true;
+    }
 }
 
 bool GetMyExternalIP(CNetAddr& ipRet)
@@ -420,7 +430,8 @@ void ThreadGetMyExternalIP()
     CNetAddr addrLocalHost;
     if (GetMyExternalIP(addrLocalHost))
     {
-        LogPrintf("GetMyExternalIP() returned %s\n", addrLocalHost.ToStringIP());
+        if (fDebug)
+            LogPrintf("GetMyExternalIP() returned %s\n", addrLocalHost.ToStringIP());
         AddLocal(addrLocalHost, LOCAL_HTTP);
     }
 }
@@ -486,7 +497,7 @@ CNode* ConnectNode(CAddress addrConnect, const char *pszDest)
 
 
     /// debug print
-    LogPrint("net", "trying connection %s lastseen=%.1fhrs\n",
+        LogPrint("net", "trying connection %s lastseen=%.1fhrs\n",
         pszDest ? pszDest : addrConnect.ToString(),
         pszDest ? 0 : (double)(GetAdjustedTime() - addrConnect.nTime)/3600.0);
 
@@ -495,7 +506,6 @@ CNode* ConnectNode(CAddress addrConnect, const char *pszDest)
     if (pszDest ? ConnectSocketByName(addrConnect, hSocket, pszDest, Params().GetDefaultPort()) : ConnectSocket(addrConnect, hSocket))
     {
         addrman.Attempt(addrConnect);
-
         LogPrint("net", "connected %s\n", pszDest ? pszDest : addrConnect.ToString());
 
         // Set to non-blocking
@@ -954,7 +964,8 @@ void ThreadSocketHandler()
             }
             else if (CNode::IsBanned(addr))
             {
-                LogPrintf("connection from %s dropped (banned)\n", addr.ToString());
+                if (fDebug)
+                    LogPrintf("connection from %s dropped (banned)\n", addr.ToString());
                 closesocket(hSocket);
             }
             else
@@ -1113,16 +1124,23 @@ void ThreadMapPort()
             char externalIPAddress[40];
             r = UPNP_GetExternalIPAddress(urls.controlURL, data.first.servicetype, externalIPAddress);
             if(r != UPNPCOMMAND_SUCCESS)
-                LogPrintf("UPnP: GetExternalIPAddress() returned %d\n", r);
+            {
+                if (fDebug)
+                    LogPrintf("UPnP: GetExternalIPAddress() returned %d\n", r);
+            }
             else
             {
                 if(externalIPAddress[0])
                 {
-                    LogPrintf("UPnP: ExternalIPAddress = %s\n", externalIPAddress);
+                    if (fDebug)
+                       LogPrintf("UPnP: ExternalIPAddress = %s\n", externalIPAddress);
                     AddLocal(CNetAddr(externalIPAddress), LOCAL_UPNP);
                 }
                 else
-                    LogPrintf("UPnP: GetExternalIPAddress failed.\n");
+                {
+                    if (fDebug)
+                       LogPrintf("UPnP: GetExternalIPAddress failed.\n");
+                }
             }
         }
 
@@ -1144,15 +1162,18 @@ void ThreadMapPort()
                     LogPrintf("AddPortMapping(%s, %s, %s) failed with code %d (%s)\n",
                         port, port, lanaddr, r, strupnperror(r));
                 else
-                    LogPrintf("UPnP Port Mapping successful.\n");;
-
+                {
+                    if (fDebug)
+                        LogPrintf("UPnP Port Mapping successful.\n");;
+                }
                 MilliSleep(20*60*1000); // Refresh every 20 minutes
             }
         }
         catch (boost::thread_interrupted)
         {
             r = UPNP_DeletePortMapping(urls.controlURL, data.first.servicetype, port.c_str(), "TCP", 0);
-            LogPrintf("UPNP_DeletePortMapping() returned : %d\n", r);
+            if (fDebug)
+                LogPrintf("UPNP_DeletePortMapping() returned : %d\n", r);
             freeUPNPDevlist(devlist); devlist = 0;
             FreeUPNPUrls(&urls);
             throw;
@@ -1207,7 +1228,8 @@ void ThreadDNSAddressSeed()
 
         LOCK(cs_vNodes);
         if (vNodes.size() >= 2) {
-            LogPrintf("P2P peers available. Skipped DNS seeding.\n");
+            if (fDebug)
+                LogPrintf("P2P peers available. Skipped DNS seeding.\n");
             return;
         }
     }
@@ -1215,7 +1237,8 @@ void ThreadDNSAddressSeed()
     const vector<CDNSSeedData> &vSeeds = Params().DNSSeeds();
     int found = 0;
 
-    LogPrintf("Loading addresses from DNS seeds (could take a while)\n");
+    if (fDebug)
+       LogPrintf("Loading addresses from DNS seeds (could take a while)\n");
 
     BOOST_FOREACH(const CDNSSeedData &seed, vSeeds) {
         if (HaveNameProxy()) {
@@ -1237,8 +1260,8 @@ void ThreadDNSAddressSeed()
             addrman.Add(vAdd, CNetAddr(seed.name, true));
         }
     }
-
-    LogPrintf("%d addresses found from DNS seeds\n", found);
+   if (fDebug)
+       LogPrintf("%d addresses found from DNS seeds\n", found);
 }
 
 
@@ -1669,7 +1692,8 @@ bool BindListenPort(const CService &addrBind, string& strError)
         LogPrintf("%s\n", strError);
         return false;
     }
-    LogPrintf("Bound to %s\n", addrBind.ToString());
+    if (fDebug) 
+         LogPrintf("Bound to %s\n", addrBind.ToString());
 
     // Listen for incoming connections
     if (listen(hListenSocket, SOMAXCONN) == SOCKET_ERROR)
@@ -1722,7 +1746,9 @@ void static Discover(boost::thread_group& threadGroup)
                 struct sockaddr_in* s4 = (struct sockaddr_in*)(ifa->ifa_addr);
                 CNetAddr addr(s4->sin_addr);
                 if (AddLocal(addr, LOCAL_IF))
-                    LogPrintf("IPv4 %s: %s\n", ifa->ifa_name, addr.ToString());
+                {
+                    LogPrint("IPv4 %s: %s\n", ifa->ifa_name, addr.ToString());
+                }
             }
             else if (ifa->ifa_addr->sa_family == AF_INET6)
             {
@@ -1759,10 +1785,14 @@ void StartNode(boost::thread_group& threadGroup)
     //
 
     if (!GetBoolArg("-dnsseed", true))
-        LogPrintf("DNS seeding disabled\n");
-    else
+         {
+         if (fDebug)    
+            LogPrintf("DNS seeding disabled\n");
+         }
+     else
+     {
         threadGroup.create_thread(boost::bind(&TraceThread<void (*)()>, "dnsseed", &ThreadDNSAddressSeed));
-
+     }
 #ifdef USE_UPNP
     // Map ports with UPnP
     MapPort(GetBoolArg("-upnp", USE_UPNP));
@@ -1786,7 +1816,8 @@ void StartNode(boost::thread_group& threadGroup)
 
 bool StopNode()
 {
-    LogPrintf("StopNode()\n");
+    if (fDebug)
+        LogPrintf("StopNode()\n");
     MapPort(false);
     if (semOutbound)
         for (int i=0; i<MAX_OUTBOUND_CONNECTIONS; i++)
diff --git a/src/netbase.cpp b/src/netbase.cpp
index eb6859e28c..f82860f3d6 100644
--- a/src/netbase.cpp
+++ b/src/netbase.cpp
@@ -1,5 +1,6 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2014 The Bitcoin developers
+// Copyright (c) 2015-2017 The Feathercoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -164,8 +165,9 @@ bool LookupNumeric(const char *pszName, CService& addr, int portDefault)
 }
 
 bool static Socks4(const CService &addrDest, SOCKET& hSocket)
-{
-    LogPrintf("SOCKS4 connecting %s\n", addrDest.ToString());
+{   
+    if (fDebug)
+       LogPrintf("SOCKS4 connecting %s\n", addrDest.ToString());
     if (!addrDest.IsIPv4())
     {
         closesocket(hSocket);
@@ -203,13 +205,15 @@ bool static Socks4(const CService &addrDest, SOCKET& hSocket)
             LogPrintf("ERROR: Proxy returned error %d\n", pchRet[1]);
         return false;
     }
-    LogPrintf("SOCKS4 connected %s\n", addrDest.ToString());
+    if (fDebug)
+        LogPrintf("SOCKS4 connected %s\n", addrDest.ToString());
     return true;
 }
 
 bool static Socks5(string strDest, int port, SOCKET& hSocket)
 {
-    LogPrintf("SOCKS5 connecting %s\n", strDest);
+    if (fDebug)
+        LogPrintf("SOCKS5 connecting %s\n", strDest);
     if (strDest.size() > 255)
     {
         closesocket(hSocket);
@@ -307,7 +311,8 @@ bool static Socks5(string strDest, int port, SOCKET& hSocket)
         closesocket(hSocket);
         return error("Error reading from proxy");
     }
-    LogPrintf("SOCKS5 connected %s\n", strDest);
+    if (fDebug)
+        LogPrintf("SOCKS5 connected %s\n", strDest);
     return true;
 }
 
@@ -357,13 +362,15 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe
             int nRet = select(hSocket + 1, NULL, &fdset, NULL, &timeout);
             if (nRet == 0)
             {
-                LogPrint("net", "connection to %s timeout\n", addrConnect.ToString());
+                if (fDebug)
+                    LogPrint("net", "connection to %s timeout\n", addrConnect.ToString());
                 closesocket(hSocket);
                 return false;
             }
             if (nRet == SOCKET_ERROR)
             {
-                LogPrintf("select() for %s failed: %s\n", addrConnect.ToString(), NetworkErrorString(WSAGetLastError()));
+                if (fDebug)
+                    LogPrintf("select() for %s failed: %s\n", addrConnect.ToString(), NetworkErrorString(WSAGetLastError()));
                 closesocket(hSocket);
                 return false;
             }
@@ -374,13 +381,15 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe
             if (getsockopt(hSocket, SOL_SOCKET, SO_ERROR, &nRet, &nRetSize) == SOCKET_ERROR)
 #endif
             {
-                LogPrintf("getsockopt() for %s failed: %s\n", addrConnect.ToString(), NetworkErrorString(WSAGetLastError()));
+                if (fDebug)
+                    LogPrintf("getsockopt() for %s failed: %s\n", addrConnect.ToString(), NetworkErrorString(WSAGetLastError()));
                 closesocket(hSocket);
                 return false;
             }
             if (nRet != 0)
             {
-                LogPrintf("connect() to %s failed after select(): %s\n", addrConnect.ToString(), NetworkErrorString(nRet));
+                if (fDebug)
+                    LogPrintf("connect() to %s failed after select(): %s\n", addrConnect.ToString(), NetworkErrorString(nRet));
                 closesocket(hSocket);
                 return false;
             }
@@ -391,7 +400,8 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe
         else
 #endif
         {
-            LogPrintf("connect() to %s failed: %s\n", addrConnect.ToString(), NetworkErrorString(WSAGetLastError()));
+            if (fDebug)
+                LogPrintf("connect() to %s failed: %s\n", addrConnect.ToString(), NetworkErrorString(WSAGetLastError()));
             closesocket(hSocket);
             return false;
         }
@@ -882,7 +892,8 @@ uint64_t CNetAddr::GetHash() const
 
 void CNetAddr::print() const
 {
-    LogPrintf("CNetAddr(%s)\n", ToString());
+    if (fDebug)
+        LogPrintf("CNetAddr(%s)\n", ToString());
 }
 
 // private extensions to enum Network, only returned by GetExtNetwork,
@@ -1115,7 +1126,8 @@ std::string CService::ToString() const
 
 void CService::print() const
 {
-    LogPrintf("CService(%s)\n", ToString());
+    if (fDebug)
+       LogPrintf("CService(%s)\n", ToString());
 }
 
 void CService::SetPort(unsigned short portIn)
@@ -1150,7 +1162,7 @@ std::string NetworkErrorString(int err)
 #ifdef STRERROR_R_CHAR_P /* GNU variant can return a pointer outside the passed buffer */
     s = strerror_r(err, buf, sizeof(buf));
 #else /* POSIX variant always returns message in buffer */
-    (void) strerror_r(err, buf, sizeof(buf));
+    if (strerror_r(err, buf, sizeof(buf))) buf[0] = 0;
 #endif
     return strprintf("%s (%d)", s, err);
 }
diff --git a/src/noui.cpp b/src/noui.cpp
index 32c861b0d9..e1a70af6d4 100644
--- a/src/noui.cpp
+++ b/src/noui.cpp
@@ -1,5 +1,6 @@
 // Copyright (c) 2010 Satoshi Nakamoto
 // Copyright (c) 2009-2014 The Bitcoin developers
+// Copyright (c) 2015-2017 The Feathercoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -28,15 +29,16 @@ static bool noui_ThreadSafeMessageBox(const std::string& message, const std::str
     default:
         strCaption += caption; // Use supplied caption (can be empty)
     }
-
-    LogPrintf("%s: %s\n", strCaption, message);
+    if (fDebug)
+        LogPrintf("%s: %s\n", strCaption, message);
     fprintf(stderr, "%s: %s\n", strCaption.c_str(), message.c_str());
     return false;
 }
 
 static void noui_InitMessage(const std::string &message)
 {
-    LogPrintf("init message: %s\n", message);
+    if (fDebug)
+        LogPrintf("init message: %s\n", message);
 }
 
 void noui_connect()
diff --git a/src/qt/bitcoin.cpp b/src/qt/bitcoin.cpp
index ac98e0bde5..86815825fd 100644
--- a/src/qt/bitcoin.cpp
+++ b/src/qt/bitcoin.cpp
@@ -68,7 +68,8 @@ Q_DECLARE_METATYPE(bool*)
 
 static void InitMessage(const std::string &message)
 {
-    LogPrintf("init message: %s\n", message);
+    if (fDebug)
+        LogPrintf("init message: %s\n", message);
 }
 
 /*
@@ -130,14 +131,16 @@ static void initTranslations(QTranslator &qtTranslatorBase, QTranslator &qtTrans
 void DebugMessageHandler(QtMsgType type, const char *msg)
 {
     Q_UNUSED(type);
-    LogPrint("qt", "GUI: %s\n", msg);
+    if (fDebug)
+        LogPrint("qt", "GUI: %s\n", msg);
 }
 #else
 void DebugMessageHandler(QtMsgType type, const QMessageLogContext& context, const QString &msg)
 {
     Q_UNUSED(type);
     Q_UNUSED(context);
-    LogPrint("qt", "GUI: %s\n", qPrintable(msg));
+    if (fDebug)
+         LogPrint("qt", "GUI: %s\n", qPrintable(msg));
 }
 #endif
 
@@ -239,8 +242,9 @@ void BitcoinCore::handleRunawayException(std::exception *e)
 void BitcoinCore::initialize()
 {
     try
-    {
-        LogPrintf("Running AppInit2 in thread\n");
+    {   
+        if (fDebug)
+            LogPrintf("Running AppInit2 in thread\n");
         int rv = AppInit2(threadGroup);
         if(rv)
         {
@@ -261,11 +265,13 @@ void BitcoinCore::shutdown()
 {
     try
     {
-        LogPrintf("Running Shutdown in thread\n");
+        if (fDebug)
+            LogPrintf("Running Shutdown in thread\n");
         threadGroup.interrupt_all();
         threadGroup.join_all();
         Shutdown();
-        LogPrintf("Shutdown finished\n");
+        if (fDebug)
+           LogPrintf("Shutdown finished\n");
         emit shutdownResult(1);
     } catch (std::exception& e) {
         handleRunawayException(&e);
@@ -293,10 +299,12 @@ BitcoinApplication::BitcoinApplication(int &argc, char **argv):
 
 BitcoinApplication::~BitcoinApplication()
 {
-    LogPrintf("Stopping thread\n");
+    if (fDebug)
+       LogPrintf("Stopping thread\n");
     emit stopThread();
     coreThread->wait();
-    LogPrintf("Stopped thread\n");
+    if (fDebug)
+        LogPrintf("Stopped thread\n");
 
     delete window;
     window = 0;
@@ -358,13 +366,15 @@ void BitcoinApplication::startThread()
 
 void BitcoinApplication::requestInitialize()
 {
-    LogPrintf("Requesting initialize\n");
+    if (fDebug)
+        LogPrintf("Requesting initialize\n");
     emit requestedInitialize();
 }
 
 void BitcoinApplication::requestShutdown()
 {
-    LogPrintf("Requesting shutdown\n");
+    if (fDebug)
+       LogPrintf("Requesting shutdown\n");
     window->hide();
     window->setClientModel(0);
     pollShutdownTimer->stop();
@@ -386,7 +396,8 @@ void BitcoinApplication::requestShutdown()
 
 void BitcoinApplication::initializeResult(int retval)
 {
-    LogPrintf("Initialization result: %i\n", retval);
+    if (fDebug)
+        LogPrintf("Initialization result: %i\n", retval);
     // Set exit result: 0 if successful, 1 if failure
     returnValue = retval ? 0 : 1;
     if(retval)
@@ -441,7 +452,8 @@ void BitcoinApplication::initializeResult(int retval)
 
 void BitcoinApplication::shutdownResult(int retval)
 {
-    LogPrintf("Shutdown result: %i\n", retval);
+    if (fDebug)
+        LogPrintf("Shutdown result: %i\n", retval);
     quit(); // Exit main loop after shutdown finished
 }
 
diff --git a/src/util.cpp b/src/util.cpp
index a2f7cdf479..d96101369a 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -1,5 +1,6 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2014 The Bitcoin developers
+// Copyright (c) 2015-2017 The Feathercoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -179,7 +180,8 @@ void RandAddSeedPerfmon()
     {
         RAND_add(pdata, nSize, nSize/100.0);
         OPENSSL_cleanse(pdata, nSize);
-        LogPrint("rand", "RandAddSeed() %lu bytes\n", nSize);
+        if (fDebug)
+            LogPrint("rand", "RandAddSeed() %lu bytes\n", nSize);
     }
 #endif
 }
@@ -1252,7 +1254,8 @@ void AddTimeData(const CNetAddr& ip, int64_t nTime)
     // Add data
     static CMedianFilter<int64_t> vTimeOffsets(200,0);
     vTimeOffsets.input(nOffsetSample);
-    LogPrintf("Added time data, samples %d, offset %+d (%+d minutes)\n", vTimeOffsets.size(), nOffsetSample, nOffsetSample/60);
+    if (fDebug)
+       LogPrintf("Added time data, samples %d, offset %+d (%+d minutes)\n", vTimeOffsets.size(), nOffsetSample, nOffsetSample/60);
     if (vTimeOffsets.size() >= 5 && vTimeOffsets.size() % 2 == 1)
     {
         int64_t nMedian = vTimeOffsets.median();
@@ -1280,7 +1283,8 @@ void AddTimeData(const CNetAddr& ip, int64_t nTime)
                     fDone = true;
                     string strMessage = _("Warning: Please check that your computer's date and time are correct! If your clock is wrong Feathercoin will not work properly.");
                     strMiscWarning = strMessage;
-                    LogPrintf("*** %s\n", strMessage);
+                    if (fDebug)
+                        LogPrintf("*** %s\n", strMessage);
                     uiInterface.ThreadSafeMessageBox(strMessage, "", CClientUIInterface::MSG_WARNING);
                 }
             }
@@ -1290,7 +1294,8 @@ void AddTimeData(const CNetAddr& ip, int64_t nTime)
                 LogPrintf("%+d  ", n);
             LogPrintf("|  ");
         }
-        LogPrintf("nTimeOffset = %+d  (%+d minutes)\n", nTimeOffset, nTimeOffset/60);
+        if (fDebug)  
+           LogPrintf("nTimeOffset = %+d  (%+d minutes)\n", nTimeOffset, nTimeOffset/60);
     }
 }
 
diff --git a/src/util.h b/src/util.h
index caf814659e..0bd0bbf232 100644
--- a/src/util.h
+++ b/src/util.h
@@ -524,7 +524,8 @@ template <typename Callable> void LoopForever(const char* name,  Callable func,
 {
     std::string s = strprintf("feathercoin-%s", name);
     RenameThread(s.c_str());
-    LogPrintf("%s thread start\n", name);
+    if (fDebug) 
+        LogPrintf("%s thread start\n", name);
     try
     {
         while (1)
@@ -535,7 +536,8 @@ template <typename Callable> void LoopForever(const char* name,  Callable func,
     }
     catch (boost::thread_interrupted)
     {
-        LogPrintf("%s thread stop\n", name);
+        if (fDebug)
+            LogPrintf("%s thread stop\n", name);
         throw;
     }
     catch (std::exception& e) {
@@ -553,14 +555,17 @@ template <typename Callable> void TraceThread(const char* name,  Callable func)
     std::string s = strprintf("feathercoin-%s", name);
     RenameThread(s.c_str());
     try
-    {
-        LogPrintf("%s thread start\n", name);
+    { 
+        if (fDebug)
+           LogPrintf("%s thread start\n", name);
         func();
-        LogPrintf("%s thread exit\n", name);
+        if (fDebug)
+            LogPrintf("%s thread exit\n", name);
     }
     catch (boost::thread_interrupted)
     {
-        LogPrintf("%s thread interrupt\n", name);
+        if (fDebug)
+           LogPrintf("%s thread interrupt\n", name);
         throw;
     }
     catch (std::exception& e) {
diff --git a/src/wallet.cpp b/src/wallet.cpp
index aaaa2be5c1..c70c3ed0dc 100644
--- a/src/wallet.cpp
+++ b/src/wallet.cpp
@@ -1,5 +1,6 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2015 The Bitcoin developers
+// Copyright (c) 2015-2017 The Feathercoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -260,7 +261,8 @@ bool CWallet::ChangeWalletPassphrase(const SecureString& strOldWalletPassphrase,
                 if (pMasterKey.second.nDeriveIterations < 25000)
                     pMasterKey.second.nDeriveIterations = 25000;
 
-                LogPrintf("Wallet passphrase changed to an nDeriveIterations of %i\n", pMasterKey.second.nDeriveIterations);
+                if (fDebug)
+                    LogPrintf("Wallet passphrase changed to an nDeriveIterations of %i\n", pMasterKey.second.nDeriveIterations);
 
                 if (!crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
                     return false;
@@ -449,7 +451,8 @@ bool CWallet::EncryptWallet(const SecureString& strWalletPassphrase)
     if (kMasterKey.nDeriveIterations < 25000)
         kMasterKey.nDeriveIterations = 25000;
 
-    LogPrintf("Encrypting Wallet with an nDeriveIterations of %i\n", kMasterKey.nDeriveIterations);
+    if (fDebug)
+        LogPrintf("Encrypting Wallet with an nDeriveIterations of %i\n", kMasterKey.nDeriveIterations);
 
     if (!crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, kMasterKey.nDeriveIterations, kMasterKey.nDerivationMethod))
         return false;
@@ -669,7 +672,7 @@ bool CWallet::AddToWallet(const CWalletTx& wtxIn, bool fFromLoadWallet)
         }
 
         //// debug print
-        LogPrintf("AddToWallet %s  %s%s\n", wtxIn.GetHash().ToString(), (fInsertedNew ? "new" : ""), (fUpdated ? "update" : ""));
+        //   LogPrintf("AddToWallet %s  %s%s\n", wtxIn.GetHash().ToString(), (fInsertedNew ? "new" : ""), (fUpdated ? "update" : ""));
 
         // Write to disk
         if (fInsertedNew || fUpdated)
@@ -705,13 +708,13 @@ bool CWallet::AddToWalletIfInvolvingMe(const uint256 &hash, const CTransaction&
         bool fExisted = mapWallet.count(hash);
         if (fExisted && !fUpdate) return false;
         	
-        LogPrintf("AddToWalletIfInvolvingMe,hash=%s .\n",hash.ToString()); 
+        //   LogPrintf("AddToWalletIfInvolvingMe,hash=%s .\n",hash.ToString()); 
         FindStealthTransactions(tx);
         
         if (fExisted || IsMine(tx) || IsFromMe(tx))
         {
             CWalletTx wtx(this,tx);
-            // Get merkle branch if transaction was found in a block
+         // Get merkle branch if transaction was found in a block
             if (pblock)
                 wtx.SetMerkleBranch(pblock);
             return AddToWallet(wtx);
@@ -1009,7 +1012,7 @@ void CWalletTx::RelayWalletTransaction()
     {
         if (GetDepthInMainChain() == 0) {
             uint256 hash = GetHash();
-            LogPrintf("Relaying wtx %s\n", hash.ToString());
+        //     LogPrintf("Relaying wtx %s\n", hash.ToString());
             RelayTransaction((CTransaction)*this, hash);
         }
     }
@@ -1044,7 +1047,7 @@ void CWallet::ResendWalletTransactions()
     nLastResend = GetTime();
 
     // Rebroadcast any of our txes that aren't in a block yet
-    LogPrintf("ResendWalletTransactions()\n");
+    //   LogPrintf("ResendWalletTransactions()\n");
     {
         LOCK(cs_wallet);
         // Sort them in chronological order
@@ -1290,11 +1293,11 @@ bool CWallet::SelectCoinsMinConf(int64_t nTargetValue, int nConfMine, int nConfT
                 nValueRet += vValue[i].first;
             }
 
-        LogPrint("selectcoins", "SelectCoins() best subset: ");
+    //    LogPrint("selectcoins", "SelectCoins() best subset: ");
         for (unsigned int i = 0; i < vValue.size(); i++)
             if (vfBest[i])
                 LogPrint("selectcoins", "%s ", FormatMoney(vValue[i].first));
-        LogPrint("selectcoins", "total %s\n", FormatMoney(nBest));
+    //   LogPrint("selectcoins", "total %s\n", FormatMoney(nBest));
     }
 
     return true;
@@ -1958,7 +1961,7 @@ bool CWallet::SendStealthMoneyToDestination(CStealthAddress& sxAddress, int64_t
 
 bool CWallet::FindStealthTransactions(const CTransaction& tx)
 {
-    LogPrintf("FindStealthTransactions() tx:%s,", tx.GetHash().GetHex().c_str());    
+  //  LogPrintf("FindStealthTransactions() tx:%s,", tx.GetHash().GetHex().c_str());    
     /*if (tx.GetHash().GetHex().compare("85568ae1dacfdc6730b0d2ddeb2c4d7d07b0ac702e6d9a7f408293e2cd628d57")==1)
    	{
    		LogPrintf("no debug.\n");
@@ -1981,35 +1984,35 @@ bool CWallet::FindStealthTransactions(const CTransaction& tx)
         nOutputIdOuter++;
         // -- for each OP_RETURN need to check all other valid outputs
         
-        LogPrintf("BOOST_FOREACH nOutputIdOuter=%d ,find txout...\n", nOutputIdOuter);
-        LogPrintf("txout scriptPubKey= %s\n",  txout.scriptPubKey.ToString().c_str()); //OP_RETURN 02fe58a19a83c9ce0fc129bfa0a6a53b3440b6f9eac357143b23be38b7779c53d2
-        LogPrintf("txout hash = %s\n",  txout.GetHash().GetHex().c_str());  //5bada4eca0588e4dbb33ec37bd658dfdd7b9bce1e3ad3aa68461151f2e835597
-        CScript::const_iterator itTxA = txout.scriptPubKey.begin();//µü´úÆ÷£¬µÚÒ»¸öÔªËØ
+    //    LogPrintf("BOOST_FOREACH nOutputIdOuter=%d ,find txout...\n", nOutputIdOuter);
+    //    LogPrintf("txout scriptPubKey= %s\n",  txout.scriptPubKey.ToString().c_str()); //OP_RETURN 02fe58a19a83c9ce0fc129bfa0a6a53b3440b6f9eac357143b23be38b7779c53d2
+    //    LogPrintf("txout hash = %s\n",  txout.GetHash().GetHex().c_str());  //5bada4eca0588e4dbb33ec37bd658dfdd7b9bce1e3ad3aa68461151f2e835597
+        CScript::const_iterator itTxA = txout.scriptPubKey.begin();  // An iterator, the first element
         
         if (!txout.scriptPubKey.GetOp(itTxA, opCode, vchEphemPK) || opCode != OP_RETURN)
             continue;
-        LogPrintf("Note: txout.scriptPubKey,check vchEphemPK=%s\n", HexStr(vchEphemPK).c_str()); //Õâ¸öÊä³ö²»ÄÜÊÇ¿Õ£¬Ó¦¸ÃÊÇephem_pubkey
-        LogPrintf("Note: opCode=%i\n", (int)opCode);//=106
-        LogPrintf("Note: itTxA=%s\n", HexStr(itTxA,itTxA).c_str());//ʹÓõü´úÆ÷
-        *itTxA++;//¿ç¹ý²Ù×÷·û
+    //    LogPrintf("Note: txout.scriptPubKey,check vchEphemPK=%s\n", HexStr(vchEphemPK).c_str()); // This output can not be empty, should be  ephem_pubkey
+    //    LogPrintf("Note: opCode=%i\n", (int)opCode);// =106
+    //    LogPrintf("Note: itTxA=%s\n", HexStr(itTxA,itTxA).c_str());//  Use iterator
+        *itTxA++; // Cross the operator
         vchEphemPKtt.assign(itTxA, itTxA + 33);
-        vchEphemPK.assign(itTxA, itTxA + 33);  //ÎÒ²¹³äµÄ´úÂ룬¹Ø¼ü£¬Õâ¸öÊä³ö²»ÄÜÊÇ¿Õ£¬Ó¦¸ÃÊÇephem_pubkey
-        LogPrintf("Note: txout.scriptPubKey,again vchEphemPKtt=%s\n", HexStr(vchEphemPKtt).c_str());
-        LogPrintf("Note: txout.scriptPubKey,again vchEphemPK=%s\n", HexStr(vchEphemPK).c_str());
+        vchEphemPK.assign(itTxA, itTxA + 33);  // I added the code to the key that this output can not be empty and should be  ephem_pubkey
+    //    LogPrintf("Note: txout.scriptPubKey,again vchEphemPKtt=%s\n", HexStr(vchEphemPKtt).c_str());
+    //    LogPrintf("Note: txout.scriptPubKey,again vchEphemPK=%s\n", HexStr(vchEphemPK).c_str());
         
         int32_t nOutputId = -1;
         nStealth++;
         BOOST_FOREACH(const CTxOut& txoutB, tx.vout) //tx.vout again
         {
             nOutputId++;
-            LogPrintf("BOOST_FOREACH nOutputId=%d ,print param.....\n", nOutputId);
+     //       LogPrintf("BOOST_FOREACH nOutputId=%d ,print param.....\n", nOutputId);
             
-            if (&txoutB == &txout)  //°ÑOP_RETURN½»Ò×·Ö±ðÓëÁí2¸öÖ´ÐÐ
+            if (&txoutB == &txout)  //To put OP_RETURN The transaction is executed separately from the other two
                 continue;
             
             bool txnMatch = false; // only 1 txn will match an ephem pk
-            LogPrintf("CTxOut: %s\n", txoutB.ToString().c_str());
-            LogPrintf("only 1 txn will match an ephem pk,tx.vout scriptPubKey %s\n",  txoutB.scriptPubKey.ToString().c_str());    
+      //      LogPrintf("CTxOut: %s\n", txoutB.ToString().c_str());
+      //      LogPrintf("only 1 txn will match an ephem pk,tx.vout scriptPubKey %s\n",  txoutB.scriptPubKey.ToString().c_str());    
                //OP_DUP OP_HASH160 d0ae59f757fc9ce14559413e2d00ac8fede6f9a2 OP_EQUALVERIFY OP_CHECKSIG        
             
             CTxDestination address;
@@ -2022,7 +2025,7 @@ bool CWallet::FindStealthTransactions(const CTransaction& tx)
             CKeyID ckidMatch = boost::get<CKeyID>(address);            
             if (HaveKey(ckidMatch)) // no point checking if already have key
                 continue;           
-            LogPrintf("CTxDestination=CKeyID,ckidMatch=%s \n", ckidMatch.ToString().c_str());
+      //      LogPrintf("CTxDestination=CKeyID,ckidMatch=%s \n", ckidMatch.ToString().c_str());
              //a2f9e6ed8fac002d3e415945e19cfc57f759aed0
             
             int i=0;
@@ -2030,38 +2033,39 @@ bool CWallet::FindStealthTransactions(const CTransaction& tx)
             for (it = stealthAddresses.begin(); it != stealthAddresses.end(); ++it)
             {
                 i++;
-                LogPrintf("StealthAddress iterator=%d \n", i); //
+          //      LogPrintf("StealthAddress iterator=%d \n", i); //
                 if (it->scan_secret.size() != ec_secret_size)
                     continue; // stealth address is not owned
-                LogPrintf("it->scan_secret.size() %d\n",  it->scan_secret.size());
-                LogPrintf("it->Encodeded() %s\n",  it->Encoded().c_str());  //ÕÒµ½ÊÕ¿îÈËÒþÉí¹«³×µØÖ·
+           //     LogPrintf("it->scan_secret.size() %d\n",  it->scan_secret.size());
+           //     LogPrintf("it->Encodeded() %s\n",  it->Encoded().c_str());  // Find the recipient's stealth key address
                 memcpy(&sScan.e[0], &it->scan_secret[0], ec_secret_size);  //??? 33u
                 
-                LogPrintf("StealthAddress Label=%s\n",it->label);
-                LogPrintf("StealthAddress Address=%s\n",it->Encoded());
-                LogPrintf("StealthAddress Scan Secret=%s\n",HexStr(it->scan_secret.begin(), it->scan_secret.end()));//f1e76e169c05b00ad755ef6128a1fe2ccc1f2351383f5a5969f4040994d3f25e
-                LogPrintf("StealthAddress Scan Pubkey=%s\n",HexStr(it->scan_pubkey.begin(), it->scan_pubkey.end()));//038cf92caa6f1fe56b19e09cca0bdc52a81e46007bc12622688c0feda804f9d073
-                LogPrintf("StealthAddress Spend Secret=%s\n",HexStr(it->spend_secret.begin(), it->spend_secret.end()));//117a9e4a428e7549eeeaa1dc3deb5cab2696518e2af0849fc6b7d675fe0a10ee
-                LogPrintf("StealthAddress Spend Pubkey=%s\n",HexStr(it->spend_pubkey.begin(), it->spend_pubkey.end()));
-                    //02ffae1e8fda48c5ff6824ac0d497ea3c3b1ef3a438832bd5e5edc0bf4f93172d6,ÓëOP_RETURN²»Æ¥Åä
+             //   LogPrintf("StealthAddress Label=%s\n",it->label);
+             //   LogPrintf("StealthAddress Address=%s\n",it->Encoded());
+             //   LogPrintf("StealthAddress Scan Secret=%s\n",HexStr(it->scan_secret.begin(), it->scan_secret.end()));//f1e76e169c05b00ad755ef6128a1fe2ccc1f2351383f5a5969f4040994d3f25e
+             //   LogPrintf("StealthAddress Scan Pubkey=%s\n",HexStr(it->scan_pubkey.begin(), it->scan_pubkey.end()));//038cf92caa6f1fe56b19e09cca0bdc52a81e46007bc12622688c0feda804f9d073
+             //   LogPrintf("StealthAddress Spend Secret=%s\n",HexStr(it->spend_secret.begin(), it->spend_secret.end()));//117a9e4a428e7549eeeaa1dc3deb5cab2696518e2af0849fc6b7d675fe0a10ee
+             //   LogPrintf("StealthAddress Spend Pubkey=%s\n",HexStr(it->spend_pubkey.begin(), it->spend_pubkey.end()));
+                    //02ffae1e8fda48c5ff6824ac0d497ea3c3b1ef3a438832bd5e5edc0bf4f93172d6,  versus  OP_RETURN Mismatch
                 
-                LogPrintf("StealthSecret.....");
-                LogPrintf("sScan.e=%s\n",HexStr(&sScan.e[0],&sScan.e[32]).c_str());   //ÊÕ¿îÈËÒþÉí¹«³×µØÖ·,Scan Secret:scan_secret
-                LogPrintf("vchEphemPK=%s\n", HexStr(vchEphemPK).c_str()); //??? Ϊ¿Õ£¬pubkeyÊǸöÎÊÌâ
-                LogPrintf("it->spend_pubkey=%s\n", HexStr(it->spend_pubkey)); //
-                LogPrintf("sShared.e=%s\n",HexStr(&sShared.e[0],&sShared.e[32]).c_str());  //Ϊ¿Õ
-                LogPrintf("pkExtracted=%" PRIszu ":%s\n", pkExtracted.size(), HexStr(pkExtracted).c_str());//Ϊ¿Õ
+         //       LogPrintf("StealthSecret.....");
+             //   LogPrintf("sScan.e=%s\n",HexStr(&sScan.e[0],&sScan.e[32]).c_str());   //,Payee stealth public key address    Scan Secret:scan_secret
+             //   LogPrintf("vchEphemPK=%s\n", HexStr(vchEphemPK).c_str()); //??? Is empty pubkey  Is a problem
+             //   LogPrintf("it->spend_pubkey=%s\n", HexStr(it->spend_pubkey)); //
+             //   LogPrintf("sShared.e=%s\n",HexStr(&sShared.e[0],&sShared.e[32]).c_str());  // Is empty
+             //   LogPrintf("pkExtracted=%" PRIszu ":%s\n", pkExtracted.size(), HexStr(pkExtracted).c_str()); // Is empty
                  
                 int rv=StealthSecret(sScan, vchEphemPK, it->spend_pubkey, sShared, pkExtracted);
                      //StealthSecret(ephem_secret, sxAddr.scan_pubkey, sxAddr.spend_pubkey, secretShared, pkSendTo) != 0)
                      //receive:secret = scan_secret, pubkey = ephem_pubkey(vchEphemPK)
                 if (rv!= 0)
                 {
-                    LogPrintf("StealthSecret failed.rv=%d \n",rv);
+                    if (fDebug)
+                        LogPrintf("StealthSecret failed.rv=%d \n",rv);
                     continue;
                 };
-                LogPrintf("StealthSecret ok.rv=%d \n",rv);
-                LogPrintf("pkExtracted= %" PRIszu ": %s\n", pkExtracted.size(), HexStr(pkExtracted).c_str());//pkOut
+               // LogPrintf("StealthSecret ok.rv=%d \n",rv);
+               // LogPrintf("pkExtracted= %" PRIszu ": %s\n", pkExtracted.size(), HexStr(pkExtracted).c_str());//pkOut
                 
                 CPubKey cpkE(pkExtracted);                
                 if (!cpkE.IsValid())
@@ -2071,7 +2075,7 @@ bool CWallet::FindStealthTransactions(const CTransaction& tx)
                 if (ckidMatch != ckidE)
                     continue;
                 
-                //if (fDebug)
+                if (fDebug)
                     LogPrintf("Found stealth txn to address %s\n", it->Encoded().c_str());
                 
                 if (IsLocked())
@@ -2182,8 +2186,8 @@ bool CWallet::CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey)
     
     {
         LOCK2(cs_main, cs_wallet);
-        LogPrintf("CommitTransaction start................\n");
-        LogPrintf("CommitTransaction:\n%s", wtxNew.ToString());
+     //   LogPrintf("CommitTransaction start................\n");
+     //   LogPrintf("CommitTransaction:\n%s", wtxNew.ToString());
         {
             // This is only to keep the database open to defeat the auto-flush for the
             // duration of this scope.  This is the only place where this optimization
@@ -2214,7 +2218,7 @@ bool CWallet::CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey)
         mapRequestCount[wtxNew.GetHash()] = 0;
 
         // Broadcast
-        LogPrintf("CommitTransaction Broadcast start.............\n");
+     //   LogPrintf("CommitTransaction Broadcast start.............\n");
         if (!wtxNew.AcceptToMemoryPool(false))
         {
             // This must not fail. The transaction has already been signed and recorded.
@@ -2222,7 +2226,7 @@ bool CWallet::CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey)
             return false;
         }
         wtxNew.RelayWalletTransaction();
-        LogPrintf("CommitTransaction RelayWalletTransaction............\n");
+     //    LogPrintf("CommitTransaction RelayWalletTransaction............\n");
     }
     return true;
 }
@@ -2239,7 +2243,7 @@ string CWallet::SendMoney(CScript scriptPubKey, int64_t nValue, CWalletTx& wtxNe
     if (IsLocked())
     {
         string strError = _("Error: Wallet locked, unable to create transaction!");
-        LogPrintf("SendMoney() : %s", strError);
+   //   LogPrintf("SendMoney() : %s", strError);
         return strError;
     }
     string strError;
@@ -2247,7 +2251,7 @@ string CWallet::SendMoney(CScript scriptPubKey, int64_t nValue, CWalletTx& wtxNe
     {
         if (nValue + nFeeRequired > GetBalance())
             strError = strprintf(_("Error: This transaction requires a transaction fee of at least %s because of its amount, complexity, or use of recently received funds!"), FormatMoney(nFeeRequired));
-        LogPrintf("SendMoney() : %s\n", strError);
+    //  LogPrintf("SendMoney() : %s\n", strError);
         return strError;
     }
 
@@ -2255,7 +2259,7 @@ string CWallet::SendMoney(CScript scriptPubKey, int64_t nValue, CWalletTx& wtxNe
     if (fAskFee && !uiInterface.ThreadSafeAskFee(nFeeRequired, _("Sending...")))
         return "ABORTED";
         
-    LogPrintf("SendMoney, scriptPubKey=%s \n",scriptPubKey.ToString());
+  //  LogPrintf("SendMoney, scriptPubKey=%s \n",scriptPubKey.ToString());
     
     if (!CommitTransaction(wtxNew, reservekey))
         return _("Error: The transaction was rejected! This might happen if some of the coins in your wallet were already spent, such as if you used a copy of wallet.dat and coins were spent in the copy but not marked as spent here.");
@@ -2278,7 +2282,7 @@ string CWallet::SendMoneyToDestination(const CTxDestination& address, int64_t nV
     CScript scriptPubKey;
     scriptPubKey.SetDestination(address);
 
-		LogPrintf("SendMoneyToDestination.....................\n");
+	//	LogPrintf("SendMoneyToDestination.....................\n");
 		
     return SendMoney(scriptPubKey, nValue, wtxNew, fAskFee);
 }
@@ -2420,7 +2424,7 @@ bool CWallet::NewKeyPool()
             walletdb.WritePool(nIndex, CKeyPool(GenerateNewKey()));
             setKeyPool.insert(nIndex);
         }
-        LogPrintf("CWallet::NewKeyPool wrote %d new keys\n", nKeys);
+    //    LogPrintf("CWallet::NewKeyPool wrote %d new keys\n", nKeys);
     }
     return true;
 }
@@ -2450,7 +2454,7 @@ bool CWallet::TopUpKeyPool(unsigned int kpSize)
             if (!walletdb.WritePool(nEnd, CKeyPool(GenerateNewKey())))
                 throw runtime_error("TopUpKeyPool() : writing generated key failed");
             setKeyPool.insert(nEnd);
-            LogPrintf("keypool added key %d, size=%u\n", nEnd, setKeyPool.size());
+        //    LogPrintf("keypool added key %d, size=%u\n", nEnd, setKeyPool.size());
         }
     }
     return true;
@@ -2479,7 +2483,7 @@ void CWallet::ReserveKeyFromKeyPool(int64_t& nIndex, CKeyPool& keypool)
         if (!HaveKey(keypool.vchPubKey.GetID()))
             throw runtime_error("ReserveKeyFromKeyPool() : unknown key in key pool");
         assert(keypool.vchPubKey.IsValid());
-        LogPrintf("keypool reserve %d\n", nIndex);
+    //    LogPrintf("keypool reserve %d\n", nIndex);
     }
 }
 
@@ -2506,7 +2510,7 @@ void CWallet::KeepKey(int64_t nIndex)
         CWalletDB walletdb(strWalletFile);
         walletdb.ErasePool(nIndex);
     }
-    LogPrintf("keypool keep %d\n", nIndex);
+ //   LogPrintf("keypool keep %d\n", nIndex);
 }
 
 void CWallet::ReturnKey(int64_t nIndex)
@@ -2516,7 +2520,7 @@ void CWallet::ReturnKey(int64_t nIndex)
         LOCK(cs_wallet);
         setKeyPool.insert(nIndex);
     }
-    LogPrintf("keypool return %d\n", nIndex);
+   // LogPrintf("keypool return %d\n", nIndex);
 }
 
 bool CWallet::GetKeyFromPool(CPubKey& result)
diff --git a/src/walletdb.cpp b/src/walletdb.cpp
index 8b6c44e21c..c96f14ebb4 100644
--- a/src/walletdb.cpp
+++ b/src/walletdb.cpp
@@ -1,5 +1,6 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2015 The Bitcoin developers
+// Copyright (c) 2015-2017 The Feathercoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -692,12 +693,12 @@ DBErrors CWalletDB::LoadWallet(CWallet* pwallet)
     // upgrading, we don't want to make it worse.
     if (result != DB_LOAD_OK)
         return result;
-
-    LogPrintf("nFileVersion = %d\n", wss.nFileVersion);
-
-    LogPrintf("Keys: %u plaintext, %u encrypted, %u w/ metadata, %u total\n",
-           wss.nKeys, wss.nCKeys, wss.nKeyMeta, wss.nKeys + wss.nCKeys);
-
+    if (fDebug)
+    {
+         LogPrintf("nFileVersion = %d\n", wss.nFileVersion);
+         LogPrintf("Keys: %u plaintext, %u encrypted, %u w/ metadata, %u total\n",
+               wss.nKeys, wss.nCKeys, wss.nKeyMeta, wss.nKeys + wss.nCKeys);
+    }
     // nTimeFirstKey is only reliable if all keys have metadata
     if ((wss.nKeys + wss.nCKeys) != wss.nKeyMeta)
         pwallet->nTimeFirstKey = 1; // 0 would be considered 'no value'