Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
Payware: Kaspersky Internet Security
I use Snuffy Security.
Spyhunter
I got a Sony Vaio last March, and it came with a free year of Kaspersky. It's pretty good, and the only security that's on my laptop.
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Just stay away from Norton - it's GOT to be the biggest resource hog I've ever seen....