I use Kaspersky Internet Security 2009
Like it very much.. doesn't hog resources.
I use mcAfee Total Security premium...its pretty good....secure too
Norton Internet Security is one of the most popular antivirus.
I am using Avast and F-Prot and have no problems using them
High Quality LinkWheel Creation Service! Unique Content
Yesterday i downloaded the free version of avaira and it works really cool..
I found and repaired 22 viruses in my system..
Previously,My "updated" kaspersky said that no virus was found in my system....