diff --git a/src/core/qgspallabeling.cpp b/src/core/qgspallabeling.cpp
@@ -2286,7 +2286,10 @@ void QgsPalLabeling::drawLabel( pal::LabelPosition* label, QgsRenderContext& con
         }
 
         // paint the text
-        painter->setCompositionMode( tmpLyr.blendMode );
+        if ( context.useAdvancedEffects() )
+        {
+          painter->setCompositionMode( tmpLyr.blendMode );
+        }
 //        painter->setPen( Qt::NoPen );
 //        painter->setBrush( tmpLyr.textColor );
 //        painter->drawPath( path );
@@ -2350,7 +2353,10 @@ void QgsPalLabeling::drawLabelBuffer( QgsRenderContext& context,
   }
 
   p->save();
-  p->setCompositionMode( tmpLyr.bufferBlendMode );
+  if ( context.useAdvancedEffects() )
+  {
+    p->setCompositionMode( tmpLyr.bufferBlendMode );
+  }
 //  p->setPen( pen );
 //  p->setBrush( tmpColor );
 //  p->drawPath( path );
@@ -2512,7 +2518,10 @@ void QgsPalLabeling::drawLabelBackground( QgsRenderContext& context,
                                          ( 100.0 - ( double )( tmpLyr.shapeTransparency ) ) / 100.0 );
 
     p->save();
-    p->setCompositionMode( tmpLyr.shapeBlendMode );
+    if ( context.useAdvancedEffects() )
+    {
+      p->setCompositionMode( tmpLyr.shapeBlendMode );
+    }
     p->translate( component.center().x(), component.center().y() );
     p->rotate( component.rotation() );
     double xoff = tmpLyr.scaleToPixelContext( tmpLyr.shapeOffset.x(), context, tmpLyr.shapeOffsetUnits );
@@ -2642,7 +2651,10 @@ void QgsPalLabeling::drawLabelBackground( QgsRenderContext& context,
     }
 
     p->setOpacity(( 100.0 - ( double )( tmpLyr.shapeTransparency ) ) / 100.0 );
-    p->setCompositionMode( tmpLyr.shapeBlendMode );
+    if ( context.useAdvancedEffects() )
+    {
+      p->setCompositionMode( tmpLyr.shapeBlendMode );
+    }
 
     // scale for any print output or image saving @ specific dpi
     p->scale( component.dpiRatio(), component.dpiRatio() );
@@ -2744,7 +2756,10 @@ void QgsPalLabeling::drawLabelShadow( QgsRenderContext& context,
 
   p->save();
   p->setRenderHints( QPainter::Antialiasing | QPainter::SmoothPixmapTransform );
-  p->setCompositionMode( tmpLyr.shadowBlendMode );
+  if ( context.useAdvancedEffects() )
+  {
+    p->setCompositionMode( tmpLyr.shadowBlendMode );
+  }
   p->setOpacity(( 100.0 - ( double )( tmpLyr.shadowTransparency ) ) / 100.0 );
 
   double scale = ( double )tmpLyr.shadowScale / 100.0;

diff --git a/src/core/qgsproject.h b/src/core/qgsproject.h
@@ -345,17 +345,17 @@ class CORE_EXPORT QgsProject : public QObject
      * @param mapLayer  The map layer which is being initialized
      * @param layerNode The layer node from the project file
      */
-    void readMapLayer( QgsMapLayer* mapLayer, const QDomElement& layerNode );
+    void readMapLayer( QgsMapLayer *mapLayer, const QDomElement &layerNode );
 
     /**
      * Emitted, when a layer is being saved. You can use this method to save
      * additional information to the layer.
      *
      * @param mapLayer  The map layer which is being initialized
-     * @param layerNode The layer node from the project file
+     * @param layerElem The layer element from the project file
      * @param doc The document
      */
-    void writeMapLayer( QgsMapLayer* mapLayer, QDomElement& layerElem,  QDomDocument& doc );
+    void writeMapLayer( QgsMapLayer *mapLayer, QDomElement &layerElem, QDomDocument &doc );
 
     //! emitted when the project file has been written and closed
     void projectSaved();

diff --git a/src/core/qgsrendercontext.cpp b/src/core/qgsrendercontext.cpp
@@ -23,6 +23,7 @@ QgsRenderContext::QgsRenderContext()
     mCoordTransform( 0 ),
     mDrawEditingInformation( true ),
     mForceVectorOutput( false ),
+    mUseAdvancedEffects( true ),
     mRenderingStopped( false ),
     mScaleFactor( 1.0 ),
     mRasterScaleFactor( 1.0 ),

diff --git a/src/core/qgsrendercontext.h b/src/core/qgsrendercontext.h
@@ -59,6 +59,13 @@ class CORE_EXPORT QgsRenderContext
 
     bool forceVectorOutput() const {return mForceVectorOutput;}
 
+    /**Returns true if advanced effects such as blend modes such be used
+      @note added in 1.9*/
+    bool useAdvancedEffects() const {return mUseAdvancedEffects;}
+    /**Used to enable or disable advanced effects such as blend modes
+      @note: added in version 1.9*/
+    void setUseAdvancedEffects( bool enabled ) { mUseAdvancedEffects = enabled; }
+
     bool drawEditingInformation() const {return mDrawEditingInformation;}
 
     double rendererScale() const {return mRendererScale;}
@@ -104,6 +111,9 @@ class CORE_EXPORT QgsRenderContext
     /**If true then no rendered vector elements should be cached as image*/
     bool mForceVectorOutput;
 
+    /**Flag if advanced visual effects such as blend modes should be used. True by default*/
+    bool mUseAdvancedEffects;
+
     QgsMapToPixel mMapToPixel;
 
     /**True if the rendering has been canceled*/

diff --git a/src/core/qgsvectorlayer.cpp b/src/core/qgsvectorlayer.cpp
@@ -3816,6 +3816,10 @@ void QgsVectorLayer::saveStyleToDatabase( QString name, QString description,
 
 
 
+QString QgsVectorLayer::loadNamedStyle( const QString theURI, bool &theResultFlag )
+{
+  return loadNamedStyle( theURI, theResultFlag, false );
+}
 
 QString QgsVectorLayer::loadNamedStyle( const QString theURI, bool &theResultFlag , bool loadFromLocalDB )
 {

diff --git a/src/core/qgsvectorlayer.h b/src/core/qgsvectorlayer.h
@@ -710,9 +710,9 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer
 
     /**
      * Lists all the style in db split into related to the layer and not related to
-     * @param ids the QVector in which will be stored the style db ids
-     * @param names the QVector in which will be stored the style names
-     * @param descriptions the QVector in which will be stored the style descriptions
+     * @param ids the list in which will be stored the style db ids
+     * @param names the list in which will be stored the style names
+     * @param descriptions the list in which will be stored the style descriptions
      * @param msgError
      * @return the number of styles related to current layer
      */
@@ -724,7 +724,20 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer
      */
     virtual QString getStyleFromDatabase( QString styleId, QString &msgError );
 
-    virtual QString loadNamedStyle( const QString theURI, bool &theResultFlag, bool loadFromLocalDb = false );
+    /**
+     * Load a named style from file/local db/datasource db
+     * @param theURI the URI of the style or the URI of the layer
+     * @param theResultFlag will be set to true if a named style is correctly loaded
+     * @param loadFromLocalDb if true forces to load from local db instead of datasource one
+     */
+    virtual QString loadNamedStyle( const QString theURI, bool &theResultFlag, bool loadFromLocalDb );
+
+    /**
+     * Calls loadNamedStyle( theURI, theResultFlag, false );
+     * Retained for backward compatibility
+     */
+    virtual QString loadNamedStyle( const QString theURI, bool &theResultFlag );
+
     virtual bool applyNamedStyle( QString namedStyle , QString errorMsg );
 
     /** convert a saved attribute editor element into a AttributeEditor structure as it's used internally.

diff --git a/src/providers/postgres/qgspostgresprovider.cpp b/src/providers/postgres/qgspostgresprovider.cpp
@@ -24,6 +24,8 @@
 #include <qgsrectangle.h>
 #include <qgscoordinatereferencesystem.h>
 
+#include <QMessageBox>
+
 #include "qgsvectorlayerimport.h"
 #include "qgsprovidercountcalcevent.h"
 #include "qgsproviderextentcalcevent.h"
@@ -3307,6 +3309,15 @@ QGISEXTERN bool saveStyle( const QString& uri, const QString& qmlStyle, const QS
   res = conn->PQexec( checkQuery );
   if ( res.PQntuples() > 0 )
   {
+    if ( QMessageBox::question( 0, QObject::tr( "Save style in database" ),
+                                QObject::tr( "A style named \"%1\" already exists in the database for this layer. Do you want to overwrite it?" )
+                                .arg( styleName.isEmpty() ? dsUri.table() : styleName ),
+                                QMessageBox::Yes | QMessageBox::No ) == QMessageBox::No )
+    {
+      errCause = QObject::tr( "Operation aborted. No changes were made in the database" );
+      return false;
+    }
+
     sql = QString( "UPDATE layer_styles"
                    " SET useAsDefault=%1"
                    ",styleQML=XMLPARSE(DOCUMENT %2)"
@@ -3398,7 +3409,6 @@ QGISEXTERN int listStyles( const QString &uri, QStringList &ids, QStringList &na
     return -1;
   }
 
-  // ORDER BY (CASE WHEN useAsDefault THEN 1 ELSE 2 END), update_time DESC;")
   QString selectRelatedQuery = QString( "SELECT id,styleName,description"
                                         " FROM layer_styles"
                                         " WHERE f_table_catalog=%1"

diff --git a/src/ui/qgisapp.ui b/src/ui/qgisapp.ui
@@ -200,6 +200,7 @@
     </property>
     <addaction name="mActionHelpContents"/>
     <addaction name="mActionHelpAPI"/>
+    <addaction name="mActionNeedSupport"/>
     <addaction name="separator"/>
     <addaction name="mActionQgisHomePage"/>
     <addaction name="mActionCheckQgisVersion"/>
@@ -2068,6 +2069,11 @@ Acts on currently active editable layer</string>
     <string>Select features using an expression</string>
    </property>
   </action>
+  <action name="mActionNeedSupport">
+   <property name="text">
+    <string>Need Support?</string>
+   </property>
+  </action>
  </widget>
  <resources>
   <include location="../../images/images.qrc"/>

diff --git a/src/ui/qgsprojectpropertiesbase.ui b/src/ui/qgsprojectpropertiesbase.ui
@@ -901,7 +901,7 @@
               <string notr="true">font-weight:bold;</string>
              </property>
              <property name="text">
-              <string>Defaut styles</string>
+              <string>Default styles</string>
              </property>
             </widget>
            </item>

diff --git a/src/ui/qgssavetodbdialog.ui b/src/ui/qgssavetodbdialog.ui
@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>355</width>
-    <height>235</height>
+    <height>246</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -94,7 +94,7 @@
    <item row="2" column="0" rowspan="2" colspan="2">
     <widget class="QLabel" name="label">
      <property name="text">
-      <string>Optionally pick an input form for attribute editing (QT Creator UI format), it will be stored on the db</string>
+      <string>Optionally pick an input form for attribute editing (QT Designer UI format), it will be stored in the database</string>
      </property>
      <property name="textFormat">
       <enum>Qt::PlainText</enum>
-Original file line number
+Diff line change
@@ Expand Up @@
+    QString QgsVectorLayer::loadNamedStyle( const QString theURI, bool &theResultFlag )
+    {
+      return loadNamedStyle( theURI, theResultFlag, false );
+    }
     QString QgsVectorLayer::loadNamedStyle( const QString theURI, bool &theResultFlag , bool loadFromLocalDB )
     {
@@ Expand Down @@