On Fri, 29 Jul 2011 23:29:09 +0800, lina wrote: > when I tried to watch some video online, in iceweasle, > > it's (naturally) silent in less than 2 mins, it can continue playing but > no sound. I can drag further but can play, just no sound. (...) Check if there is another application making use of the sound system: lsof | grep snd If yes, just kill it. Greetings, -- Camaleón