Hi, We have a system where we have the following scenario that we can't manually reproduce: Prereqs: - Firefox is open with many tabs including Last.fm, youtube and possibly other sites containing flash applications, - Amarok or another is generally running *but* nothing is currently played from it. >From time to time and especially when that firefox is left running for a long time(possibly left running while one of the tabs I've mentioned was *playing* some music); firefox stops playing sounds. It's also quite possible that the user locks his KDE session when leaving the computer. >From pacmd we can see that the relevant source-input (registered by firefox) is still there even all the tabs are closed. Its state is DRAINED. The only solution is to kill firefox which causes the source-input to disappear. Killing and relaunching firefox fixes the problem. Seen that we can't reproduce the bug consistently, I wanted to set up some debugging stuff(e.g. setting the log-level to debug for PA and possible other suggestions from you) on that system and try to get detailed information from it once the problem happens again. This is a 2.6.30.9 box with PulseAudio 0.9.15. Thanks, Ozan