KB948496 Ate My Network
We started having weird issues today with users in a particular site not being able to log in, not mapping drives, etc. We were getting odd DNS and KCC errors in the logs. We finally traced it down to KB948496, which was applied early this morning. Once we removed that patch, all was well.
It appears there is a conflict between that patch and the Broadcomm NIC drivers in our HP server.
There's some general chatter about the patch here. I'd say avoid this one until fully vetted in your environment.