bitdefender Antivirus PLUS 2012 Edition. 3 User license. No mail in rebates.
I don't use this, but thought I would share this deal with everyone.
Some people complain of the product being a "resource hog," people with older computers be warned!
Checked out some independent lab tests it apparently scores well, however it did mediocre on PCMag's own tests:
Anyways, if your not using any security software at all you may want to look at this, or at least look at other free options: Microsoft Security Essentials, AVG, Avast, Avira, etc.