Index: cache_updater.php
===================================================================
--- cache_updater.php	(revision 12940)
+++ cache_updater.php	(working copy)
@@ -392,7 +392,10 @@
 				$next_data['template']			=	$data['template'];
 				$next_data['item_template']		=	$data['item_template'];
 				$next_data['current_id']		=	$data['children'][ $data['current_child'] ]; //next iteration should process child
-				$next_data['perms']				=	$data['perms']; //we should copy our permissions to child - inheritance
+
+				// TODO: use "clone" when on PHP5
+				$next_data['perms']				=	unserialize( serialize($data['perms']) ); // we should copy our permissions to child - inheritance
+
 				$next_data['perms']->SetCatId($next_data['current_id']);
 				$next_data['left'] = $data['right'];
 				$data['current_child']++;