I have the same problem. I have not tested it, but it seems likely that Skype is causing it for me too.
-- You received this bug notification because you are a member of DX Packages, which is subscribed to indicator-sound in Ubuntu. Matching subscriptions: dx-packages https://bugs.launchpad.net/bugs/1301482 Title: ubuntu 14.04 - sound icon is always blocked Status in “indicator-sound” package in Ubuntu: Incomplete Bug description: In Ubuntu 14.04 Whenever the sound is muted the icon is red (so it seems to recognize blocked sound). However there is definitely nothing playing and also pavucontrol, shows that no sound is playing. So it seems to be a bug package: indicator-sound 12.10.2+14.04.20140401-0ubuntu1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/indicator-sound/+bug/1301482/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : dx-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp