Apple has replaced the top case, due to faulty plastic which cause a crack on the bottom left (where the lcd protection bars either side of the iSight come into contact with the case). Now I have discoloration, on the case (the one with the luminous Apple logo, on the top corners), and also a flickering screen. I have heard that if you have 3 problems with one notebook they just replace the whole machine? Will Apple do this? And will I be able to pay a bit extra and get the Blackbook?