As some of you may know, in 2009 I got the first gen of the uni-body of the MacBook pro 2.9ghz. Since I have had the computer the Super drive has failed 5 times, battery, keyboard and not running as well as it use to. On the 5th time of sending it to group 8 ( people who apple use) it came back with the case all warped and damaged ( they had to put a new one on for some reason and new keyboard) so I rang apple up and sent it back. Then yet again it came back with problems - the bottom panel didn't fit properly and the lights on the keyboard didn't work so apple give me replacement. The replacement is the new one with thunderbolt 15 inch 2.2ghz. It was hard to sort this problem out with apple. Its coming through the post today and can't wait! What do I use the thunderbolt for?