Logic board replaced on my June '07 SR MBP 2.4GHz 256MB VRAM due to failing graphics card. The Apple Genius only had to take a look at the crash log I had printed out to send it in to be repaired.
****, my 2.2 died and they replaced it with a 2.6 SR. I guess considering my usage patterns (fairly hard on the hardware) mine'll probably die again then.
Seems like a lot of people dont really have any issues. That is pretty good. It would be nice if we can get some more voters...would be nice to have about 200-500 people vote so we can get an idea of the issue. Keep on voting!