"virus free apple"... not for much longer. Now they're running a *nix variant and people have started buying them for home, the virus writers have already taken note.
You don't hear much about infections on anything but MS systems, funny nobody mentions the phone infections that are out there or the PDA ones (neither needs to run an MS OS). They even managed to write a crude infection that bricked a PSP, so why do Apple think they're so untouchable anymore