[GG-Xtreme]

McAfee is a massive resource hog, besides having many problems and being a poor choice overall. AVG, Avast and Avira, all free AV's, are much better than McAfee. If (for some stupid reason) you refuse to install a free AV, Kapersky is one of the best AV's in the world, and I've heard that NOD32 is very good as well. The two best suites you can buy are ZoneAlarm Internet Security Suite and Norton 360 (it uses a totally redesigned AV engine that isn't a resource hog and is much more stable than the previous Norton horrors).