What antivirus do you use?

I've been using ZenOK Free Antivirus for a while and I'm quite happy about it. It's totally free and it has an Online Backup and Boot-up Protection works like a charm to me Check it out here guys http://freeantivirus.zenok.com/ :) Cheers y'all !

I have used Norton Internet Security for years. It comes with Norton Antivirus software, among other useful tools to keep my computer safe. I do find that it slows down my system when it tries to run automatic updates, which is frustrating.. but it is a good piece of software, and has kept my computer mostly free of viruses for a good long time now.

i use AOL antivirus and norton, what about you?