Monday I was using my MBP as usual when all of a sudden a dark veil came down over my screen and the cursed "You need to restart your computer. Hold down the Power button until it turns off, then press the Power button again." message. I tried turning it off and back on but it wouldn't boot after that. I took it to a local Apple certified repair shop and they diagnosed the problem as "bad memory." They said the Corsair RAM that I had installed suddenly went bad. Not too bad. Asked them what they recommend and took it home. When I installed my old stock RAM all I got was beeping. I ordered new Mushkin RAM and got the same problem, so I took it back to the shop. My new problem is that one of my memory slots apparently shorted out. So right now I'm running on one slot of a Mushkin 4GB stick. For the shop to repair the slot they said it'd be $1200 since they would have to replace the logic board. I called Apple and their price to fix the problem is $324. Not crazy expensive, but at the moment I'm between jobs so I'll just have to wait to send it in. Not the most nail-biting story, I know. Just sharing my experience. I havent had a problem with my Mid-2010 until now. Sucks.