diff -r 63c982fb92f2 -r b73252188534 harvester/client/src/harvestereventobserverao.cpp
--- a/harvester/client/src/harvestereventobserverao.cpp	Thu Jul 15 19:07:24 2010 +0300
+++ b/harvester/client/src/harvestereventobserverao.cpp	Thu Aug 19 10:20:41 2010 +0300
@@ -126,6 +126,7 @@
 			iHarvesterClient.Send( EUnregisterHarvesterEvent, ipcArgs );
 			iObservers.Remove( i );
 			delete observer;
+			observer = NULL;
 			}
 		}