Mac's aren't virus proof, but less prone to viruses. I don't have any virus protection on my iBook b/c it's not worth it to buy anything, and I haven't found anything free yet that works on Mac. I bought my iBook used or $450. Not a bad deal. All it was missing was the extended cable for the power supply, the external video cable, and install discs (really would have liked to have those, but w/e). I don't think Mac is as great as people say it is, but if you can get your hands on a good priced Mac, check it out. It would probably be good to know how to use it later in life since everyone wants to go Mac... I would have liked there to be some hibernation option on Mac rather than just sleep. it eats up battery power asleep. Though I can go several days with it asleep and it probably will still have same power in it.