I found alarm messages on wcg :
s-hq-wg02 [Sun Dec 8 12:17:43 2013] Domain controller connectivity restored for proxy
winauth authentication.
s-hq-wg02 [Sun Dec 8 12:16:33 2013] Domain controller connectivity lost for proxy winauth
authentication.
s-hq-wg02 [Thu Dec 5 23:45:20 2013] Communication with the analytics engine has failed.
Please restart Content Gateway.
But user still can work normally.
Could you please help to find the root cause and troubleshoot this issue?