OK. I just built a server with a PC motherboard that had been giving me all sorts of fits the last time I used it. I had different memory in it back then, and that's since been changed.
I'm going to run Ubuntu on it on the live distro all night and see if I can move the mouse in the morning. If I was able to, then that's telling me the memory was the problem the first time. If it freezes, it's probably a bad motherboard and I'm going to be launching a barrage of obscenities that would make Ralphie's Dad blush...
I'd name this server Jude, after St. Jude, but believe it or not, saints aren't in my naming scheme. I can't tell you what my naming scheme is because then I'm easier to hack.