Hi, I'm in the market to buy my first laptop. Apple says that the RAM on the ibook's max's out to 640. Is this true? Its been a while since I've ran anything besides linux, but can 640 really be enough ram for future versions of OSX? Anyway, the configuration i am looking at is the 12" ibook w/ 640mb ram, 40gig hd, Airport card, and the appleCare protection plan for $1,428 (w/ student discount). Anyways, i'm curious about the maximum ram issue, and whether or not i'm forgetting any "must have" mac/laptop toy? thanks.