We're running 10.2.2 on sles 10.3 (tried updating zen to 10.3 a couple of weeks ago, but that failed). We've had the windows 7 sysprep problem, so I applied this patch:
NOVELL: Downloads - ZCM 10.2.2 imaging patch for sysprep - TID 7005153

Today, some slow logins with a few not able to log in at all. I didn't think it was a zen problem since the agent files were not updated and there's no mention of agent updates in the patch doc. However, I see now in ZCC that none of my workstations contacted the server today. Last entry for all is yesterday or earlier. Any ideas? I'm getting ready to backrev the server, but hate to do it since that will kill windows 7 imaging for us.