Today when I right click on the volume control icon in the notification area (where network, volume, battery etc. is controlled) and select "Sound Preferences" I get "gnome-volume-control.gstreamer" opened instead of "gnome-volume-control.pulse" as it used to be. Also, when I click on "Sound" in the Control Center I get the gstreamer mixer, not the pulse one like I used to.i Pulse audio runs fine and I can open "gnome-volume-control.pulse" from a terminal without problems. I have no idea how this got changed and how to change it back. Anyone know how to set back to the way it was?