Thanks. Sure it's not a software issue or Real Player. Never use it anymore. The problem always happens when I'm using my Google Chrome and streaming video from sites like Netflix, Youtube, or Hulu, etc....
Usually can feel an excessive build up of heat from my computer.
It's very intermittent. I can still watch hours of video and not get it to happen. Just watched one of the latest episodes of SGU (Stargate Universe) and though the picture quality wasn't great, nothing happened. The picture quality could have been a Hulu issue. Netflix still looks great and when I watch HD movie trailers at full screen, the picture quality is wonderful.