Index: core/menu.inc
===================================================================
--- core/menu.inc	(revision 26)
+++ core/menu.inc	(working copy)
@@ -68,7 +68,7 @@
  *   A menu item if found, boolean FALSE otherwise.
  */
 function install_menu_get_item($mlid) {
-  return db_fetch_array(db_query_range("SELECT * FROM {menu_links} WHERE mlid = %d", $mlid));
+  return db_fetch_array(db_query_range("SELECT * FROM {menu_links} WHERE mlid = %d", $mlid, 0, 1));
 }
 
 /**