Bug#662049: phonon: There is no sound at all - audio device is greyed out in configuration

[Grześ Andruszkiewicz <gandrusz@gmail.com>]

I found a workaround:
grzes:/home/ga# killall pulseaudio
grzes:/home/ga# ps -A | grep pulse
 5137 ?        00:00:00 pulseaudio

then I have only one pulseaudio and everything works fine! Why did it
end up in this wrong state in the first place?