No text in OSD when touchpad toggled on/off

[Johann Bach]

On a Samsung N150 netbook running Ubuntu 11.10, when I press Fn-F10 to turn the touchpad on or off, a blank OSD notification appears for a few seconds under the Application Indicators. By "blank", I mean a black bar with no visible text. I expected to see a message in the notification (e.g., "Touchpad on" or "Touchpad off").

Pressing Fn-F10 does turn the touchpad on or off.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: notify-osd 0.9.32-0ubuntu3
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
ApportVersion: 1.23-0ubuntu3
Architecture: i386
CurrentDmesg: [ 137.302265] init: plymouth-stop pre-start process (1659) terminated with status 1
Date: Wed Oct 19 04:09:13 2011
GtkTheme: Ambiance
IconTheme: ubuntu-mono-dark
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20111007.1)
MachineType: SAMSUNG ELECTRONICS CO., LTD. N150/N210/N220
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=a1e47fbd-09cb-4cd1-91ff-c017086a83c9 ro quiet splash acpi_backlight=vendor rfkill.default_state=0 vt.handoff=7
RelatedPackageVersions:
 xserver-xorg 1:7.6+7ubuntu7
 libgl1-mesa-glx 7.11-0ubuntu3
 libdrm2 2.4.26-1ubuntu1
 xserver-xorg-video-intel 2:2.15.901-1ubuntu2
 xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
SourcePackage: notify-osd
UpgradeStatus: No upgrade log present (probably fresh install)
WindowManager: No value set for `/desktop/gnome/session/required_components/windowmanager'
dmi.bios.date: 03/25/2010
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: 08JI.M073.20100325.JIP
dmi.board.asset.tag: SAMSUNG
dmi.board.name: N150/N210/N220
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr08JI.M073.20100325.JIP:bd03/25/2010:svnSAMSUNGELECTRONICSCO.,LTD.:pnN150/N210/N220:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnN150/N210/N220:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct10:cvrN/A:
dmi.product.name: N150/N210/N220
dmi.product.version: Not Applicable
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
glxinfo: Error: [Errno 2] No such file or directory