I got a 2011 MBP back in Sept or October after Apples inability to repair my 2010 one (2+ logic boards, new harddrive etc). Acting on the advice of a mac tech I purchased and installed 8gb of ram from OWC. My computer now has an issue of becoming totally unresponsive. At first application will cease to work but I will still be able to move between windows and applications. Soon after that the whole machine will stop and the spinning color will appear. I have never had the computer work after this happens and am always forced to reboot. Any ideas or help is appreciated!