I'm running ubuntu server lucid on a Dell Dimension 3000. I'm running headless and when I have a display plugged into the VGA, it's fine, so it must have something to do with the display drivers. When SSH'd in I run htop and at EXACTLY 10:01 uptime, it stops responding. Nothing interesting in /var/log/messages. It's upgraded from 9.10.
Has anyone had this issue or know how to fix it?