I have a dev server that has an exact image of a production web server. The prod server only has SP1 installed on it. When I first fired up the dev box, the first thing I did was install SP2, and let it be. Almost every morning when I came in, the server was unusable. It would respond to ping, but RDP and the web site running on it were down. On the screen the screen saver was bouncing around, so it wasn't hard locked. But it was unresponsive to keyboard and mouse. So now I have to hard shut it down, but when it comes back up, the only thing in the event viewer is the unexpected shutdown, nothing else.
I've since taken a fresh image of my prod box and put it on the dev server, and not installed SP2, and the dev box is humming along perfectly. I should also note that this is Server2k8 Web, 64bit
Has anyone else seen anything like this?