@Gaiyan
No viruses? No offense, but that's a little naive. Malicious software takes many forms. It probably wouldn't be too difficult to talk a typical Mac user into running a shell script containing 'rm -rf /' as a privileged user.
A well-informed user rarely encounters viruses, but not because their virus scanner is less than perfect. Rather, they don't run questionable software in the first place. And before anyone starts, I think we can skip the "Windows is questionable" jokes. ;-)
Trev
