After installation of recent Microsoft updates (MS09-009 - MS09-016) one of our servers stopped function properly. After reboot it hung up right before logon prompt. No local access, no network, no pings, only mouse was working. After booting into Safe Mode and reboot again, I was able to get it working, but it hung up few hours later again. This behavior started right after installing these patches, no any other change was done and the system was 100% stable before this.
I found one short article here - http://www.computerweekly.com/Articles/2009/04/15/235633/microsoft-patch-tuesday-update-raises-compatability.htm
, telling that one of these updates can cause problems, but it doesnt specify which one. Im wondering if somebody have more details about this and how to fix it.