Run memtest from the Ubuntu boot CDs for a couple of hours, or even
overnight.
I don't think pulseaudio does any kernel level work, so I doubt if it
is a direct cause of a hang. It may be indirect if it was exercising
something else that may cause a hang, such as some feature of ALSA.
Describe the hang ... can the host be pinged on the network?
--
James Cameron mailto:quozl@us.netrek.org
http://quozl.netrek.org/