I'm running 11.10 and when I make a call using either Skype or Google Talk, it seems the call is made, then after a slight delay, it's made again. The sound quality has static because it seems the calls are conflicting and the incoming audio repeats with a slight delay. The only thing that seems to get things working is by making a Skype test call, then closing, which seems to close one of the two instances. Then when I go back to Google Talk or Skype, all works fine. I have tried removing/reinstalling Skype and GTalk plugin, looked at pulseaudio settings, but I haven't seen any clues. Any hints as to what I should be looking for to avoid what seems to be two calls placed back to back?