diff --git a/VERSION.txt b/VERSION.txt
index a2540d2..83b0350 100644
--- a/VERSION.txt
+++ b/VERSION.txt
@@ -1 +1 @@
-15.2.7
+15.2.8
diff --git a/miniprobe/sensors/apt.py b/miniprobe/sensors/apt.py
index 004bd8e..90f927b 100644
--- a/miniprobe/sensors/apt.py
+++ b/miniprobe/sensors/apt.py
@@ -55,7 +55,7 @@ def check(self):
         upgrade = 0
         install = 0
         remove = 0
-        ret = os.popen("apt-get -s dist-upgrade | grep 'newly inst'")
+        ret = os.popen("LC_ALL=C apt-get -s dist-upgrade | grep 'newly inst'")
         updatedata = ret.readlines()
         ret.close()
         for line in updatedata:
diff --git a/miniprobe/sensors/mdadm.py b/miniprobe/sensors/mdadm.py
new file mode 100644
index 0000000..2945a2d
--- /dev/null
+++ b/miniprobe/sensors/mdadm.py
@@ -0,0 +1,140 @@
+#!/usr/bin/env python
+# With nice greetings from Dynam-IT GbR
+# Suggestion for a mdadm-raid sensor
+# Thanks to Paessler for providing the free PRTG Python Probe and the API
+
+import os
+# import re for use of re.split; explained below
+import re
+import gc
+import logging
+
+
+class MDADM(object):
+    def __init__(self):
+        gc.enable()
+
+    @staticmethod
+    def get_kind():
+        """
+        return sensor kind
+        """
+        return "mpmdadm"
+
+    @staticmethod
+    def get_sensordef():
+        """
+        Definition of the sensor and data to be shown in the PRTG WebGUI
+        """
+        sensordefinition = {
+            "kind": MDADM.get_kind(),
+            "name": "MDADM RAID Status",
+            "description": "Monitors status of RAID arrays provided by MDADM",
+            "help": "Count total number of Arrays, count arrays with missing drives,count arrays resyncing, recovering and checking",
+            "tag": "mpmdadmsensor",
+            "fields": [],
+            "groups": []
+
+        }
+        return sensordefinition
+
+    def check(self):
+
+        # Get the standard information output of mdadm and count
+        numberOfArrays = os.popen("grep ^md -c /proc/mdstat").read()
+        arraysMissingDrives = 0
+        arraysRecovering = 0
+        arraysResyncing = 0
+        arraysChecking = 0
+
+        ret = os.popen("cat /proc/mdstat").readlines()
+        mdstat = ' '.join([line.strip() for line in ret])
+        # Using re.split to split output instead of split to prevent cutting the leading "md"
+        raidArrayList = re.split(' (?=md)', mdstat)
+
+        for index in range(len(raidArrayList)):
+            # Searching for list entries beginning with "md"
+            if re.match('^md', raidArrayList[index]):
+                    print raidArrayList[index]
+                    if '_' in raidArrayList[index]:
+                            # adrive missing can also be a defect drive. Defect or missing drives are marked with an "_" instead of an "U" in the drive list
+                            arraysMissingDrives += 1
+                    if 'recovering' in raidArrayList[index]:
+                            arraysRecovering += 1
+                    if 'resync' in raidArrayList[index]:
+                            arraysResyncing += 1
+                    if 'check' in raidArrayList[index]:
+                            arraysChecking += 1
+
+        channel_list = [
+            {
+                "name": "Total count of RAID arrays",
+                "mode": "integer",
+                "unit": "count",
+                "limitmaxwarning": 0,
+                "limitmode": 0,
+                "value": numberOfArrays
+            },
+            {
+                "name": "RAID arrays with missing drives",
+                "mode": "integer",
+                "unit": "count",
+                # setting this channel to error if arraysMissingDrives is > 0
+                "limitmaxerror": 0,
+                "limitmode": 1,
+                "value": arraysMissingDrives
+            },
+            {
+                "name": "RAID arrays recovering",
+                "mode": "integer",
+                "unit": "count",
+                "limitmaxwarning": 0,
+                "limitmode": 1,
+                "value": arraysRecovering
+            },
+            {
+                "name": "RAID arrays resyncing",
+                "mode": "integer",
+                "unit": "count",
+                "limitmaxwarning": 0,
+                "limitmode": 1,
+                "value": arraysResyncing
+            },
+            {
+                "name": "RAID arrays in automatic checking task",
+                "mode": "integer",
+                "unit": "count",
+                # In many linux distributions an array check is performed automatically once a day or week. So we should not warn about this
+                "limitmaxwarning": 0,
+                "limitmode": 0,
+                "value": arraysChecking
+            },
+            ]
+        return channel_list
+
+    @staticmethod
+    def get_data(data, out_queue):
+        mdadm = MDADM()
+        try:
+            mdadmdata = mdadm.check()
+            data_r = {
+                "sensorid": int(data['sensorid']),
+                "message": "OK",
+                "channel": mdadmdata
+            }
+            logging.debug("Running sensor: %s" % mdadm.get_kind())
+        except Exception as e:
+            logging.error("Ooops Something went wrong with '%s' sensor %s. Error: %s" % (mdadm.get_kind(),
+                                                                                         data['sensorid'], e))
+            data_r = {
+                "sensorid": int(data['sensorid']),
+                "error": "Exception",
+                "code": 1,
+                "message": "MDADM Sensor failed. %s" % e
+            }
+            out_queue.put(data_r)
+            return 1
+        del mdadm
+        gc.collect()
+        out_queue.put(data_r)
+        return 0
diff --git a/setup.py b/setup.py
index 251ece8..2b575ed 100644
--- a/setup.py
+++ b/setup.py
@@ -138,7 +138,7 @@ def init_script(self, script_path, user):
         return init_script_tpl.read() % (script_path, user)
 
     def write_load_list(self, ds18b20_sensors, other_sensors):
-        default_sensors = "Ping,HTTP,Port,SNMPCustom,CPULoad,Memory,Diskspace,SNMPTraffic,CPUTemp,Probehealth,ExternalIP,ADNS,APT,NMAP"
+        default_sensors = "Ping,HTTP,Port,SNMPCustom,CPULoad,Memory,Diskspace,SNMPTraffic,CPUTemp,Probehealth,ExternalIP,ADNS,APT,NMAP,MDADM"
         if not (other_sensors == ""):
             default_sensors = default_sensors + "," + other_sensors
         f=open("./miniprobe/sensors/__init__.py","a")