diff -aurN zabbix-2.2.1.org/src/zabbix_agent/active.c zabbix-2.2.1/src/zabbix_agent/active.c
--- zabbix-2.2.1.org/src/zabbix_agent/active.c	2013-12-10 12:45:00.000000000 -0500
+++ zabbix-2.2.1/src/zabbix_agent/active.c	2013-12-14 04:57:07.167310565 -0500
@@ -494,6 +494,7 @@
 		zabbix_log(LOG_LEVEL_WARNING,
 				"active check configuration update from [%s:%hu] started to fail (%s)",
 				host, port, zbx_tcp_strerror());
+		disable_all_metrics();
 	}
 
 	last_ret = ret;