Apple replaced my 15.4 MBP 2.0Ghz CD, 2Gb, 100Gb HD, 256MB X1600 with 15.4 MBP 2.33Ghz C2D, 2Gb, 120Gb HD, 256MB X1600. I had it sincec last April but it lately I started having screen problems (4 grey spot, white line and 4 dead pixels). Took it to Apple Store last thursday and had it back with a new screen on friday. Worked fine until this monday when I got vertical lines and one horizontal. Took it in and the screen replaced the same day, but when I went to pick it up it turned out that the machine won't go to sleep or stay on for longer than 5 minutes. Received a call from Apple today and was told that the logic board was damaged during the second repair and the new one with all the data transferred from the old one is waiting for me at the store. Seems to be perfect, fingers crossed Two repairs and a replacement in one week!! Amazing!!!