Originally Posted by gore
The forever needing AV isn't totally correct; Windows has that need, but if you look at most Linux and BSD AV products, a lot of them only check for virii so you don't accidentally send one to someone running Windows. I can't remember which one has that as their product description, but it said that basically it checks for Windows virii and is merely a way to make sure you don't infect friends running Windows since they can't normally touch you anyway unless you're dumb enough to use Root for everything.