Well, even the 'replacement' motherboards that apple is swapping for those with bad GPU's are bad themselves... Bought my MBP June of 07, the GPU failed July 3, 08. The machine worked fine, I could VNC to it and in sys profiler it showed up as the X3100... well, 4 months later (today) my GPU is once again DEAD. So, Apple is essentially useless and are replacing bad GPU's with more defective GPU's. I tried to demand a new machine without the 8600 with no luck. The 2.6Ghz 17" machines are not on the list of affected units, tried for that no luck there either... so, tonight I go back to the Apple store for them to put another defective GPU in my $3000 machine.