I just downloaded FF4 last week. I just started up a YouTube clip and there's the Flash logo (Red bulls eye with the letter F in the middle) right in the middle. There's also a dropdown box that says "Embedded" and a play button in the middle. I press the play button but the video doesn't play. Anyways, the videos won't start no matter what I do. I even downloaded the new Flash. Can anyone tell me the problem?