After reading all the posts, and, yes, I've gotten two letters from GM, I think I'm gonna hold off. My keychain has two housekeys, my Solstice key, Scion key, the Solstice remote, my Colt Python screwdriver/medallion, and my public library, supermarket, and prescription swipe mini cards. I tried to duplicate a scenario where the ignition would "accidentally" turn off............NOTHING - couldn't duplicate the scenario where it would happen. So, for now, my opinion is 'it's not broken, so don't fix it'.
I would have a major problem if my Westers tune was erased by the former Pontiac Dealer, now Buick/GMC. These would be the same owners, whose used car lot sold my wife her Mini Cooper, then an expensive maintenance agreement, then totally screwed up a brake job which had to be fixed by MINI for 600 bucks.
Thanks for the opportunity to rant.