I had my final math exma today, along with 54 other students in my grade. 4 of us 55 use mac. I have my MacBook, another guy has a Rev. D. 15" PB, another chick has a 14" iBook, and another guy has a PPC Mini. None of the macs had any trouble. The other 51 noisy piles a' windows (all XP), had all together 17 issues. 4 broke down. 6 crahsed in Excel. 6 didn't acknowledge their own printer, and 1 wouldn't start! Just shows the superior functions and stabilty in OS X. An example from reallife, where it's a window in the ass not to use OS X.