Index: trunk/kernel/include/usersession.php
===================================================================
diff -u -r844 -r881
--- trunk/kernel/include/usersession.php	(.../usersession.php)	(revision 844)
+++ trunk/kernel/include/usersession.php	(.../usersession.php)	(revision 881)
@@ -95,7 +95,7 @@
             		{
               			if( strlen($inner_sql) ) $inner_sql .= " OR ";
               			
-              			if ($value != "Guest") {
+              			if (!stristr($value, "Guest")) {
               				$inner_sql .= $field." LIKE '%".$value."%'";
               			}
               			else {