I have been using a copy of windows 7 that my son in law bought, and it is corrupt too!
Darn thing keeps crashing the browser, and when I wake it from sleep it goes to the blue screen of death. It is 7 ultimate and I thought it would be much better than Vista, but it is not all that. They really promoted this one to be the ONE, but it fell short of my expectations quickly.
So sometime today or tomorrow im going back happily to Vista ultimate 64 bit.