So about a week ago I bought a 2ghz core duo white macbook on apples refurbished site. Got the computer on saturday and the first 2 days the computer randomly restarted or froze up about 10 times. I called apple this morning and asked if I could exchange the computer because of the problems. They told me no more of the white 2ghz duo models were in stock and they would be happy to upgrade me to the next comparable model. They asked if I would be happy with the 2ghz core 2 duo which goes for $150 more then what I paid. I said I really would like to have the superdrive which was in the original model that I bought, so they offered to upgrade even further and send me a refurbished 2.2ghz (the current top of the line white macbook). I'm so happy with apples service! This is an awesome upgrade! All I had to do was repackage the defective computer and send it back via pre-paid fedex. My new Macbook should be here by the end of the week! I already have 2gb of ram and a 7200rpm hard drive on the way. Now that I'm getting the core 2 duo model should I get even more ram since I hear these take up to 4gb!?!