"Error: Driver 'pcspkr' is already registered, aborting..."

Bug Description

Binary package hint: udev

When booting or thawing I obtain the error message: "Error: Driver 'pcspkr' is already registered, aborting..." before GNOME starts. Although mostly my PC speakers work all right.
'~$ lsmod | grep pcspkr; pcspkr 1498 0'
'~$ lsmod | grep snd-pcsp' does not produce any output.
This error message is similar to http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=495674&trim=no .
I expect that this error message does not appear.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: udev 162-2.2
ProcVersionSignature: Ubuntu 2.6.35-25.44-generic 2.6.35.10
Uname: Linux 2.6.35-25-generic i686
Architecture: i386
CustomUdevRuleFiles: 45-libmtp7.rules 65-wacom.rules
Date: Tue Feb 15 16:30:29 2011
MachineType: MEDIONPC WIM 2090
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-25-generic root=UUID=7b2db282-52a4-4a4b-b1db-032334575de7 ro
ProcEnviron:
 LANGUAGE=de_DE:de
 PATH=(custom, user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: udev
dmi.bios.date: 08/08/2006
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: R01-A0F
dmi.board.name: WIM 2090
dmi.board.vendor: MEDIONPC
dmi.chassis.type: 10
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrR01-A0F:bd08/08/2006:svnMEDIONPC:pnWIM2090:pvr:rvnMEDIONPC:rnWIM2090:rvr:cvn:ct10:cvrN/A:
dmi.product.name: WIM 2090
dmi.sys.vendor: MEDIONPC