Thank you for the thoughtful, informative response and the answer to why the miniscule number of us that have the unfortunate experience of a failed Mac should take heart in the reliability of Apple's MacBook Pro. It also explains why with that many sales Apple will not care about such a small number of failures and whether or not they might lose a few of us that may depart because of that experience. Your numbers illustrate why if it was as bad as I was suggesting then there would be much more news about it.
I will admit though that until I was researching this personal logic board problem did I learn about failures that Apple did step up and help out computer owners. I guess there was a larger number of those problems.
If I had the financial resources that Apple executives have then taking the chance on getting mine repaired or buying a new one would be easy. Unfortunately for me a $1700 computer is not an insignificant part of my annual income. Part of the reason I have purchased Macs since my first Quadra 700 for all these years is to have a computer that will last and an operating system that has proven reliable too. Until this, my only experience with a failed Mac, I have been an evangelist for Mac. I see that the few people I may have coaxed into the Mac camp was an insignificant number of new sales.
Of course I never believed I was making a dent in helping the sales of Macs back then. I just thought my fellow PC users should know how good Macs were because I cared. If they gave Macs a chance then they would see just how good they were compared to the problems they were having with their PC. I can say that all of the problems were the operating system and not the computer itself.
My comments in this forum have been for the same reason, hopefully to help someone including selfishly myself. I would love for someone to tell us why the logic boards have failed in this particular model but I guess according to the numbers you provided you might be saying it is so insignificant nobody at Apple has even investigated the reason for the failures.