Hello, I have a late 2011 15" Macbook Pro that came with Lion installed. It's gotten to the point where I can barely use it anymore because the networking doesn't work. This happens with both wired AND wireless connections. It's not the internet, because other computers are not having issues at the same times as this one. I've tried resetting the PRAM, readding the wifi network, connecting to a different network (different brand router, same problem), setting manual ip addresses. Nothing seems to work. Suggestions?