Just installed windows vista ultimate yesterday, and since then I have installed Command and Conquer 3, Nero 7, and a couple small programs, drivers etc... Vista installation was 9 gbs, C&C 3 was 6gb, and Nero was 1gb, there should only be 16-17 gbs used on that drive; however, vista is reporting 42 gbs has been used... so what happened to the other 25 gbs my drive should have available?