Index: trunk/core/units/config_search/config_search_event_handler.php
===================================================================
diff -u -N -r4216 -r4380
--- trunk/core/units/config_search/config_search_event_handler.php	(.../config_search_event_handler.php)	(revision 4216)
+++ trunk/core/units/config_search/config_search_event_handler.php	(.../config_search_event_handler.php)	(revision 4380)
@@ -53,7 +53,7 @@
 		function OnCreateCustomField(&$event)
 		{
 			$custom_field =& $event->MasterEvent->getObject();
-			if ($custom_field->GetDBField('Type') == 6) {
+			if ($custom_field->GetDBField('Type') == 6 || $custom_field->GetDBField('IsSystem') == 1) {
 				// user custom fields are not searchable
 				return false;
 			}