This is just to let you know that I took my MacBook to the store in Montreal with my three loose screws totaling in size a bit more than the diameter of a pregnant flea. First, to make a long afternoon on the phone short, the vendor is going to replace the logic board (over $ 1,000.00) *because* Apple Canada agreed that six months later, it was still covered by the warranty. I had problems with the vendor, not with Apple. The vendor argued that the MacBook had been opened and that it voided the warranty. Apple said that if there were no evidence of physical damage to the board, it was still covered. Of course, I only had taken the MacBook apart to remove the Superdrive and to eject a stuck CD with brute force, not the network kind. I consider myself lucky, I did not have to buy the same computer twice.