Sheesh... will the MAC/PC wars never end?
The fact is they both crash, need updates, have hardware issues, etc. The SINGLE reason there are fewer MAC malware threats is due to their unpopularity. If everyone started buying them and they gained equal market share then they would have just as many bad little worms as PC's.
Oh, and what processors are the new MACs running? Umm.. oh ye-e-ah... X86 (not ex 86). Heh, heh...