Skype - cannot make phone calls audioplayback problem

This was exactly my problem:

https://bugs.launchpad.net/medibuntu/+bug/285412

In skype, trying to make a phone call. I get this message 6 times:
ALSA lib pcm_bluetooth.c:1619:(bluetooth_init) BT_GETCAPABILITIES failed : Input/output error(5)
and the call fails immediately with "problem with audio playback"...

This is on a laptop, with bluetooth enabled, but i'm not trying to use a bluetooth headset or anything...

The solution is:

sudo killall -9 pulseaudio

and permament solution:

System > Preferences > Session Pulseaudio (uncheck)

Now it works.