I just got my macbook pro. Was playing with it and updating it and I have had some concerning problems. Every time I start iTunes, the computer will work for a little while, then it will just freeze. I waited a long time, but no awakening, so I have to do a hard reset. I have tried a new library (even though i have nothing in there atm) Any advice would be very helpful. This is a refurbished MBP - but Everything else seems to be working fine and dandy like sour candy.