Public bug reported:

Binary package hint: firefox-3.5

This is unlike other bugreports here, because it don't stop other audio output 
from working.
Once firefox can't play audio no more, restarting firefox fixes the problem. - 
but it needs to be killed, because this problem  makes firefox fail to end 
properly. (process remains after the window closes)

Here's why I know firefox-alsa-plugin is to blame:

-start "PulseAudio device chooser"  (install if needed)
-click it's icon on the panel, and choose "Manager"
-click "statistics" button
-press "refresh" and observe "All allocated memory blocks allocated during 
deamon Lifetime"
--if no there is no audio output from any application, observe that the number 
does not increase.
--if some application play audio, the value increases until paused or stopped - 
then it stops as well.

Now: firefox-alsa-plugin:
if you play ANY sound in firefox, the "All allocated memory blocks allocated 
during deamon Lifetime" will increase forever !
you may close the playing tab and the plugin will keep streaming audio.

I am sure it's te be blamed, it behaves unlike any other application..
pumping out data whole time.

ProblemType: Bug
Architecture: i386
Date: Thu Dec 17 08:58:47 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/lib/firefox-3.5.5/firefox
NonfreeKernelModules: nvidia
Package: firefox-3.5 3.5.5+nobinonly-0ubuntu0.9.10.1
ProcVersionSignature: Ubuntu 2.6.31-16.53-generic
SourcePackage: firefox-3.5
Uname: Linux 2.6.31-16-generic i686

** Affects: firefox-3.5 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386

-- 
firefox-alsa-plugin makes firefox stop playing audio after a while, and get 
trouble exiting
https://bugs.launchpad.net/bugs/497667
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