bah vista 64 isnt that bad, i can only count on one hand the software incompatibilities ive had with it. But yes uguru does have issues with x64 vista, or xp x64 aswell, i had many bluescreens if it was left running, the new version seems to have fixed that issue, but i get a close error sometimes. No biggie really, just close it sometimes when u dont need it on

lol