Comment 27 for bug 281732

@bofphile
    That is odd. Are you using 9.10 with your test? But even with 9.04 or 8.04 if the master channel is muted the headphones should not be hearing anything, can you check the mixers? This is most likely a issue with the audio driver.

@Luka
   I'll produce an amd64 one shortly, hopefully tonight.