Hey guys It's been happening the last 3 weeks. 2 times out of 3 that I watch a video on Youtube or Vimeo (and not necesarely watching the video, I could have paused it at the beginning to wait it to load), the internet connection bars go from full to none. Then, after 10-20 seconds, the computer totally freezes, and there it stays. Whatever I'm doing, freezes too. For instance, if I'm on itunes, the music freezes too. Everything. Then I have to manually restart the computer. That's it. It doesn't happen with anything else. I've run full AVG scans on all hard drives, deleted everything and still the same problem.