diff --git a/source/de/anomic/plasma/plasmaSwitchboard.java b/source/de/anomic/plasma/plasmaSwitchboard.java
index 5c14cdd4c..4d317fd78 100644
--- a/source/de/anomic/plasma/plasmaSwitchboard.java
+++ b/source/de/anomic/plasma/plasmaSwitchboard.java
@@ -1629,7 +1629,9 @@ public final class plasmaSwitchboard extends serverAbstractSwitch implements ser
      * shutdown procedure
      */
     public boolean cleanProfiles() throws InterruptedException {
-        if ((sbQueue.size() > 0) || (cacheLoader.size() > 0) || (noticeURL.notEmpty())) return false;
+        if ((sbQueue.size() > 0) || (cacheLoader.size() > 0) ||
+                (sbStackCrawlThread.size() > 0) || (noticeURL.notEmpty())) 
+            return false;
         final Iterator iter = profilesActiveCrawls.profiles(true);
         plasmaCrawlProfile.entry entry;
         boolean hasDoneSomething = false;