[Raistlin]

I've said it before, I'll say it again (and you'll have to trust me when I say that I speak from a position of some knowledge/experience): ANYBODY who is operating a computer that is a) connected to a network of any sort, or b) shares files/resources in any way with any other computer/processing device, and who believes that they don't need an AV program, other malware detection systems, some sort of firewall, proper patching, and proper user access controls, is either incredibly naive or incredibly irresponsible.