this dude that sells videogames and stuff told me that it makes your computer slower, the reason I asked was that I installed NFS: Most Wanted with a fresh windows xp install, and my computer froze, I reestarted it and it froze again at startup (i had SP2), now I re-installed windows again (SP1) and taking what you guys just said, that the problem might be the videogame. I live in South America, and there is no original software anywhere, everything here is bootleg. So NFS has a really weird Crack, could that be the problem?