gdm & starting pulseaudio

   Does anyone know how pulseaudio is supposed to be started for 
gdm/gnome-shell sessions?

   A test VM of a freshly installed Fedora 16 is, I think, showing 
gnome-settings-daemon starting a pulseaudio process (directly or 
indirectly).  But my main PC is not starting one, causing errors when 
gnome-shell & g-s-d try to use *my* one after I've logged in.

   I'm running out of places to ask, seems *no-one*'s got a clue (no 
responses on several mailing lists now) :-/

--

-- 
[neil <at> fnx ~]# rm -f .signature
[neil <at> fnx ~]# ls -l .signature
ls: .signature: No such file or directory
[neil <at> fnx ~]# exit