It's the stupid GMA500 Poulsbo chipset. I've now tried Debian, Arch, Linux Mint 9, Fedora, Ubuntu 9.10 (wouldn't install correctly, gonna try it again) and a plethora of patches to fix the video. All of them hose the machine. I'm about done with it. If another go at 9.10 fails, I'm going to sell the thing cheap and just install it on this machine that doesn't have that ugly GMA500 chipset in it.