I have been a Vegas user since the Sonic Foundry days. I have had ZERO problems up until a couple of days ago. The program launches just fine. When I try to open a veg file.... bang - my whole system re-boots. I'm not talking lock up... The systems totally re-boots. Other programs run just fine (DVDA, CD Architect, etc.) It's only Vegas that is affected. I'm running Windows XP with Service Pack 2. I hesitated to upgrade with SP2 as I have read about some problems with it. I've had it for a couple of months and haven't had any problems. I did a system restore to about a week ago, but the problem is still there. Right now I'm screwed, I've got deadlines, and no Vegas. Has anyone experienced anything like this? My version of Vegas is 5.0d. Any suggestions would be greatly appreciated. I'm under the gun.