I use iceweasel under Debian, and Each time I watch a movie , every 10 minutes, the image disappears, as if the contact was lost, but I still hear the sound. I then have to depress any key on my keyboard in order to see the movie continue. I do not think that the problem comes from Iceweasel, but I would like to know what can cause this problem, and how to solve it. Is there a way to tell Iceweasel or Debian to non-stop for this movie? My problem probably is easy to solve, but because I am new as Linux user, I would like to receive your suggestions.