I have a 2008 MBP with the NVIDIA 8600GT graphics card. After experiencing problems with my external monitor sometimes not coming on from sleep unless I powered my MBP off and on, my MBP suddenly stopped powering on altogether -- just a half second of the hard drive trying to spin up, and then it shuts down. It sounds like the 8600GT failure problem. I bought my MBP 3 years and 10 months ago, so I'm going to take it to Apple. What happens if Apple does replace my logic board? Do they still include an 8600GT, or do they put in a different model? Does the clock start ticking again for 4 years -- or if the new one fails in 3 months, am I out of luck?