I installed windows vista with bootcamp on a iMac about a year ago when i bought it. Everything ran smooth and well until this week. The computer started to runs SUPER SLOW. it takes like 15mins to boot to windows and any windows i open will freezes the computer. So since windows 7 is coming out i decided to try it out so I earlier today I did a fresh install of windows 7. But the computer is still running slowly. Is this a hardware issue or software issue? I know 100% i didn't get any virus or spyware. Please help! BTW when i boot the computer in OSX it runs smooth.