I currently have a '11 MBA 11" running the latest Lion OS. Sometimes when I try to watch a youtube video, or any type of flash video I just get a black box where the video should be. If you refresh the page you get the same thing, no video/flash. This happens at least once a week. Luckily, when I restart the computer the video comes back but it is a bit annoying to say the least. Is there anyone else that is experiencing this problem? Any way to remedy this? Thanks in advance!