I'm currently using norton antivirus 2006.I havent had any virus, yet.
But there is 1 antivirus that i hate.And that is bitdefender.It's a crappy system, which can be easily infected by virus. I used it for 2 months and my whole pc crashd cause of virus. So i wont recommend bitdefender to any1
I use Norton Anti-Virus and also Norton Personal Firewall. I like both. I also run Childsafe on my computer. It works good but slows me down so I disable it when the kids aren't on.