Comment 6 for bug 1181106

> I've already added "Enable=Socket" in /etc/bluetooth/audio.conf, without that I can't pair my headset.

I can confirm that PulseAudio as of 13.04 does not work with Enable=Socket. This is IMO a bug on the bluez side.

From what I've been told by the bluez people, the socket interface is deprecated anyway (and completely removed from the next bluez version IIRC), so we should track down who ever relies on this and convince them to port their application to use the newer dbus interface instead.