I'll admit I'm not answering the initial question, but it's quite
related to this thread.
I read on another forum that MacKeeper actually uses WINE! As in, it has WINE
built into it to run parts of it. Kind of like Google Earth bundled in its own
WINE to work in Linux. Reminds me of Winebottler.
Anyways, about the whole "can Mac/ Linx get malware?", that mindset
melts away after you realize that your FIRMWARE (usually the BIOS or EFI) can
get infected. That means you can have a computer without a hard drive, opical
drive, floppy diskette, network drive, or tape drive, (or any other storage
medium that I left out), let alone an operating system, can be infected. The
actual chip on your motherboard can contain malware.
All non-firmware infections are very minor in comparison because you can just
nuke your hard drive and it's gone. I would think an infected BIOS might not
let you flash it. The you'll need to do a hotswap. If the BIOS chip is
soldered to the motherboard that makes hotswapping quite the task.
These infections are very rare, so don't be paranoid.
Cheers,
Jake