McAfee's been so full of baloney over the last few years that I've dropped it completely out of all my machines. The site has an excellent WOT rating and doesn't trigger ClamAV or MS Security Essentials...If you're running Firefox, get the WOT plugin... it's one of the best security tools out there.
If you took out the antivirus, don't forget to also install Microsoft Security Essentials (a good free antivirus, a bit basic but it works) and ClamAV for windows... that'll probably give you some of the best free protection out there.