When I click on a video thumbnail I get a message that says "currently playing" but there's no video. If I move mouse pointer to the space where video should be playing, I can see an address appear at the bottom of the screen which contains the name of the video, but no video plays. I've emptied the cache, history, etc., restarted firefox, even removed and re-installed firefox, but no success. I only have this problem with my home page. Youtube and all other websites work fine.