I found out the other day that my 2010 MacBook Pro has had a graphic chip flaw that Apple has known about and documented. Since I put OS X 10.9 on it, I have been getting constant GPU panics / restarts. Apple had a silent program for three years to replace the MacBook Pro logic board if people complained about GPU panics but unfortunately, most people didn't discover the problem till they installed OS X 10.9 (when the replacement program was ended). I realize that it's a four year old computer but - Apple knew about and documented the design flaw. - I had Applecare on the MacBook Pro and Apple should have fixed it then. - I had no issues at all with OS X 10.8 and would not have upgraded to OS X 10.9 if Apple had warned me about OS X 10.9 on a 2010 MacBook Pro. I would downgrade the operating system but, once the GPU panics begin, the only way to fix the problem is a replacement logic board.