Just a heads up...
The latest windows updates killed my computer. The following patches reported successful installations, but now the computer locks immediately on bootup before it gets to the windows splash screen.
KB929338
KB929399
KB890830
Root Certificates
Beware... None of the usual tricks (F8 boot modes, etc) work at all. The system freezes up immediately on boot. I checked the hardware using a linux boot cd and the computer itself runs fine.
Anyhow, if I didn't have a recent backup I'd be totally hosed since I can't even boot in safe mode or get at the system restore points. My winXP cd is pre-SP1 so a recovery installation would be very painful. So I'll just use ghost and restore to the last known good backup.