I just got my mac book pro yesterday (my first mac), and soon as i got it I set eerything up. iTunes, firefox, mail, etc. About 2 hours later i close firefox and open it a minute later and its back to the default config. I open up mail and it asks me to configure a mailbox, and I open up itunes and it asks to import music which I already did (and the music that was on my computer is even gone!). The same thing has happened about three times so far in the past 2 days. This computer seems to forget everything about me every 2 hours, can someone please help me 