Okay mine.... a couple of months ago... I turn my old iMac on, and it everything is set back to factory settings.... Weirdest thing ever.... not really sure what happens but it sucked and I spend probably the next 4 hours getting everything back, and it does it again. Finally I say screw it and I reinstall the OS. Then I have to use a 3rd party software to rip all my songs from my iPod back on to iTunes... Such a process. Anyway, its all better now cause i have a new iBook and it rocks. So now post your worst mac/apple problem and lets hear some horror storries!