diff --git a/source/de/anomic/kelondro/text/ReferenceContainerCache.java b/source/de/anomic/kelondro/text/ReferenceContainerCache.java
index 69f9f5c11..4b71e52d4 100644
--- a/source/de/anomic/kelondro/text/ReferenceContainerCache.java
+++ b/source/de/anomic/kelondro/text/ReferenceContainerCache.java
@@ -433,6 +433,31 @@ public final class ReferenceContainerCache<ReferenceType extends Reference> exte
         	cache.put(tha, container);
         }
     }
+    
+    /*
+    public void add(final byte[] termHash, final ReferenceType newEntry) {
+        assert this.cache != null;
+        ByteArray tha = new ByteArray(termHash);
+        
+        // first access the cache without synchronization
+        ReferenceContainer<ReferenceType> container = cache.remove(tha);
+        if (container == null) container = new ReferenceContainer<ReferenceType>(factory, termHash, this.payloadrow, 1);
+        container.put(newEntry);
+        
+        // then try to replace the entry that should be empty,
+        // but it can be possible that another thread has written something in between
+        ReferenceContainer<ReferenceType> containerNew = cache.put(tha, container);
+        if (containerNew == null) return;
+        container = containerNew;
+        
+        // finally use synchronization: ensure that the entry is written exclusively
+        synchronized (cache) {
+            containerNew = cache.get(tha);
+            if (containerNew != null) container.putAllRecent(containerNew);
+        	cache.put(tha, container);
+        }
+    }
+    */
 
     public int minMem() {
         return 0;
diff --git a/source/de/anomic/plasma/plasmaSearchQuery.java b/source/de/anomic/plasma/plasmaSearchQuery.java
index f5b736f6f..6dc9a9309 100644
--- a/source/de/anomic/plasma/plasmaSearchQuery.java
+++ b/source/de/anomic/plasma/plasmaSearchQuery.java
@@ -316,6 +316,7 @@ public final class plasmaSearchQuery {
             "*" + new String(Word.word2hash(this.ranking.toExternalString())) +
             "*" + this.prefer +
             "*" + this.urlMask +
+            "*" + this.sitehash +
             "*" + this.targetlang +
             "*" + this.constraint +
             "*" + this.maxDistance;