resolve the group grants only, when the we are not using the ldap accounts backend, because resolving the memberships using ldap is very slow currently

phpgwapi/inc/class.categories.inc.php

@@ -59,8 +59,10 @@
 			$this->app_name		= $app_name;
 			$this->db			= clone($GLOBALS['egw']->db);
 			$this->db->set_app('phpgwapi');
+			if($app_name != 'addressbook' && $GLOBALS['egw_info']['server']['account_repository'] != 'ldap') {
 			     $this->grants		= $GLOBALS['egw']->acl->get_grants($app_name);
 			}
+		}
 
 		/**
 		 * return sql for predifined filters