http://discussions.apple.com/thread.jspa?threadID=934141&tstart=0 and http://discussions.apple.com/thread.jspa?threadID=926903&tstart=0 To sum it up: mac pro, ATI X1900 XT, 2gb RAM, two harddrives... I set boot camp to install XP or Vista on the second drive and when it boots up about 95% of the time the screen is distorted/artifacts everywhere, you can kinda make out what is going on but its hard. Vista's install NEVER succeeds, XP sometimes does but then will cause major problems in failing to restart, etc. I've reinstalled Boot Camp, zeroed out the second hard drive, taken out the one gig of memory I added, nothing seems to help. I went nuclear on my OS X install this evening and that was also a no go. I thought maybe the X1900 just wasn't supported at the moment but was at a friends who had almost the exact same rig and Boot Camp was working perfectly. Do I have a hardware problem that isn't showing up on OS X? I've played WoW frequently without problems, errors, or crashes. My memory has never reported an ECC error and I've also scanned everything with Mac's hardware check. Everything was updated on OS X. I very much enjoy OS X but purchased this Mac Pro for the flexibility of OS X AND XP/Vista. I really would like to get this figured out soon. If you have ANY ideas that I haven't tried yet PLEASE let me know. I'm willing to give anything a go.