[pulseaudio-discuss] using near 100% CPU when doing nothing

[Brian J. Murrell]

I have a(one of a number of)Ubuntu Karmic systems here running pulseaudio
0.9.19.  On this particular system, PA wants to eat as much CPU as is
available.  It will use up near 100% on this system when it's otherwise idle.

This particular machine is the only one of several, as I say, with this problem 
and they are all up-to-date, so I wonder if this is particular to the sound 
hardware in this machine.  It has in it:

04:01.0 Audio device: VIA Technologies, Inc. VT1708/A [Azalia HDAC] (VIA High 
Definition Audio Controller) (rev 10)
05:05.0 Multimedia audio controller: Ensoniq ES1371 [AudioPCI-97] (rev 07)

What other information can I gather to help diagnose this problem?