Index: branches/unlabeled/unlabeled-1.6.2/kernel/units/permissions/permissions_event_handler.php
===================================================================
diff -u -N -r5561 -r5618
--- branches/unlabeled/unlabeled-1.6.2/kernel/units/permissions/permissions_event_handler.php	(.../permissions_event_handler.php)	(revision 5561)
+++ branches/unlabeled/unlabeled-1.6.2/kernel/units/permissions/permissions_event_handler.php	(.../permissions_event_handler.php)	(revision 5618)
@@ -178,6 +178,27 @@
 			}
 		}
 	}
+	
+	/**
+	 * Don't delete permissions from live table in case of new category creation.
+	 * Called as much times as permission count for categories set, so don't
+	 * perform any sql queries here!
+	 *
+	 * @param kEvent $event
+	 */
+	function OnBeforeDeleteFromLive(&$event)
+	{
+		$foreign_keys = $event->getEventParam('foreign_key');
+		
+		if ((count($foreign_keys) == 1) && ($foreign_keys[0] == 0)) {
+			// parent item has zero id
+			$temp_object =& $this->Application->recallObject('c');
+			if ($temp_object->isLoaded()) {
+				// category with id = 0 found in temp table
+				$event->status = erFAIL;
+			}
+		}
+	}
 }
 
 ?>
\ No newline at end of file