I have had this problem with a few visat machines and havnt really been able to do much about it. I agree with the post above, that it could be an antivirus, but 9 times out of 10 its just vista being vista. i would reccomend downgrading to xp or going to the local tech store (or torrent site haha) and getting windows 7
if you could post which version of vista it is and what antivirus you are currently using i could possibly be of more help
