--- /home/donau101/tools/installscripts/data/blitz/memblock-org.h	2016-04-29 10:00:01.709570847 +0200
+++ /home/donau101/tools/installscripts/data/blitz/memblock-new.h	2016-04-29 10:00:01.700570521 +0200
@@ -152,17 +152,22 @@
     void          addReference()
     {       
 #ifdef BZ_DEBUG_LOG_REFERENCES
-        BZ_MUTEX_LOCK(mutex)
-        const int refcount = ++references_;
-        BZ_MUTEX_UNLOCK(mutex)
+        //BZ_MUTEX_LOCK(mutex)
+        //const int refcount = ++references_;
+        //BZ_MUTEX_UNLOCK(mutex)
+        const int refcount;
+	#pragma omp atomic capture
+        	refcount = ++references_;
 
         cout << "MemoryBlock:    reffed " << setw(8) << length_ 
 	       << " at " << ((void *)dataBlockAddress_) << " (r=" 
 	       << refcount << ")" << endl;
 #else
-        BZ_MUTEX_LOCK(mutex)
-        ++references_;
-        BZ_MUTEX_UNLOCK(mutex)
+        //BZ_MUTEX_LOCK(mutex)
+        //++references_;
+        //BZ_MUTEX_UNLOCK(mutex)
+	#pragma omp atomic update
+		++references_;
 #endif
     }
 
@@ -189,9 +194,12 @@
     int           removeReference()
     {
 
-        BZ_MUTEX_LOCK(mutex)
-        const int refcount = --references_;
-        BZ_MUTEX_UNLOCK(mutex)
+        //BZ_MUTEX_LOCK(mutex)
+        //const int refcount = --references_;
+        //BZ_MUTEX_UNLOCK(mutex)
+        int refcount;
+	#pragma omp atomic capture
+        	refcount = --references_;
 
 #ifdef BZ_DEBUG_LOG_REFERENCES
 	  cout << "MemoryBlock: dereffed  " << setw(8) << length_
@@ -203,9 +211,12 @@
 
     int references() const
   { 
-        BZ_MUTEX_LOCK(mutex)
-        const int refcount = references_;
-	BZ_MUTEX_UNLOCK(mutex)
+        //BZ_MUTEX_LOCK(mutex)
+        //const int refcount = references_;
+	//BZ_MUTEX_UNLOCK(mutex)
+        int refcount;
+	#pragma omp atomic read
+        	refcount = references_;
 
         return refcount;
     }