Same here and I just bought it 1 week ago.
I am wondering how big the problem really is and if I should sell my Macbook Pro before the 3 years are up and get new one ?
Me too! Oh well, I got it for a good price over eBay (my first time using it) and it will cover other unforseen issues. I was thinking this extension may have something to do with the recent SMC update too.