Running Parallels Desktop 4.0.6630 under CentOS 5.5. Whenever I try to start any VM of any type, the entire machine reboots without any warning. So far I've tried it with a migration from my Windows XP machine, a new clean XP install, and a new clean MS-DOS 6.22 install. All of them, same result. I click start, next thing I know I'm back to looking at my BIOS screen. Anyone have any ideas?