vlc audio output stops with pulseaudio error: Invalid number of channels

Binary package hint: vlc

I just upgraded my system from 10.04 to 10.10 today, and noticed some problems playing
a DVD with vlc.

After initially playing audio successfully in some of the initial setup screens & DVD menu, after starting the
movie the audio output stops and the following output appears in the terminal where VLC was run:

[0x100ea80] pulse audio output error: Invalid number of channels

I was able to play the movie with audio successfully in gxine, and have not otherwise noticed any
problem with audio, so I expect the problem is in vlc itself. I did notice some other non-audio
oddnesses in vlc behavior: it seemed to use an incorrect narrow aspect ration for all the initial
screens until I started the playback of the movie itself (clicking on 'play' in the DVD on-screen menu).
(Just in case it helps, the movie was Woddy Allen's 'You Will Meet a Tall Dark Stranger'.)

I've attached the output from running 'vlc --verbose=2 dvd:// &' and starting the movie from
the menu screen.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: vlc 1.1.4-1ubuntu1.4
ProcVersionSignature: Ubuntu 2.6.35-28.49-generic 2.6.35.11
Uname: Linux 2.6.35-28-generic x86_64
Architecture: amd64
Date: Sat Mar 26 22:51:12 2011
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, user)
 LANG=en_US.utf8
SourcePackage: vlc