Hi there, folks. I've been having some problems with my Unibody MBP (purchased in July 2009). I've already been to the Apple store to attempt to fix the problem, but no go. Here's the problem: - MBP shuts down unexpectedly around 60-80% battery life. This usually occurs when I'm watching a YouTube video or random web-surfing. - After it shuts down, I press the power button, the Apple screen shows up, and it shuts down again. - The only solution is to plug it in to be charged to the MagSafe and then turn it back on. This has been happening a few months before my AppleCare expired in July 2012. I consulted the Genius Bar numerous times beforehand, who, after some fixes, told me it's all fine. It apparently isn't fine. I've also reset the SMC, etc. Any tips? Thanks.