Gtk-Message: Failed to load module canberra-gtk-module

When starting Thunderbird from Konsole, I receive this error:
Gtk-Message: Failed to load module "canberra-gtk-module"

This also appears when starting other programs.
Kubuntu 11.10.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: thunderbird 7.0.1+build1+nobinonly-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
NonfreeKernelModules: nvidia
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: tdn 2403 F.... pulseaudio
BuildID: 20110929183320
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfe220000 irq 49'
   Mixer name : 'Analog Devices AD1984'
   Components : 'HDA:11d41984,17aa20bb,00100400'
   Controls : 31
   Simple ctrls : 19
Card29.Amixer.info:
 Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7KHT24WW-1.08'
   Mixer name : 'ThinkPad EC 7KHT24WW-1.08'
   Components : ''
   Controls : 1
   Simple ctrls : 1
Card29.Amixer.values:
 Simple mixer control 'Console',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Channel: release
Date: Sat Oct 29 20:41:51 2011
ForcedLayersAccel: False
InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011)
IpRoute:
 default via 10.0.0.254 dev wlan0 proto static
 default dev eth0 scope link metric 1002
 10.0.0.0/24 dev wlan0 proto kernel scope link src 10.0.0.1 metric 2
 169.254.0.0/16 dev eth0 proto kernel scope link src 169.254.5.113
 169.254.0.0/16 dev wlan0 scope link metric 1000
Plugins:
 Adobe Reader 9.4 - Lib=npwrapper.nppdf.so, Location=/usr/lib/mozilla/plugins
 Shockwave Flash - Lib=npwrapper.libflashplayer.so, Location=/var/lib/flashplugin-installer
 Skype Buttons for Kopete - Lib=skypebuttons.so, Location=/usr/lib/mozilla/plugins
ProcEnviron:
 LANGUAGE=en_DK:en
 PATH=(custom, user)
 LANG=en_DK.UTF-8
 SHELL=/bin/zsh
Profiles: Profile0 (Default) - LastVersion=7.0.1/20110929183320
RunningIncompatibleAddons: False
SourcePackage: thunderbird
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/14/2008
dmi.bios.vendor: LENOVO
dmi.bios.version: 7LETC5WW (2.25 )
dmi.board.name: 6460D8G
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7LETC5WW(2.25):bd11/14/2008:svnLENOVO:pn6460D8G:pvrThinkPadT61p:rvnLENOVO:rn6460D8G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 6460D8G
dmi.product.version: ThinkPad T61p
dmi.sys.vendor: LENOVO