gtk-window-decorator crashed with SIGSEGV in max_window_name_width()

[paganuntu]

It just happended, and I lost all my title bars

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: compiz-gnome 1:0.9.7.0+bzr3035-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-20.32-generic 3.2.12
Uname: Linux 3.2.0-20-generic i686
.tmp.unity.scope.cities: Error: [Errno 21] est un dossier: '/tmp/unity-scope-cities'
.tmp.unity.support.test.0:

ApportVersion: 1.94.1-0ubuntu2
Architecture: i386
CompizPlugins: [core,composite,opengl,decor,place,move,gnomecompat,regex,compiztoolbox,resize,imgpng,mousepoll,wall,obs,session,grid,vpswitch,animation,expo,workarounds,winrules,fade,ezoom,scale,unityshell,scaleaddon]
CompositorRunning: compiz
Date: Thu Mar 22 13:03:53 2012
DistUpgraded: 2012-02-03 18:45:27,660 DEBUG enabling apt cron job
DistroCodename: precise
DistroVariant: ubuntu
DkmsStatus:
 virtualbox, 4.1.10, 3.2.0-19-generic, i686: installed
 virtualbox, 4.1.10, 3.2.0-19-generic-pae, i686: installed
 virtualbox, 4.1.10, 3.2.0-20-generic, i686: installed
 virtualbox, 4.1.10, 3.2.0-20-generic-pae, i686: installed
ExecutablePath: /usr/bin/gtk-window-decorator
GraphicsCard:
 Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller])
   Subsystem: Acer Incorporated [ALI] Device [1025:0144]
   Subsystem: Acer Incorporated [ALI] Device [1025:0144]
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
MachineType: Acer Aspire 2930Z
ProcCmdline: /usr/bin/gtk-window-decorator
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-20-generic root=UUID=7bf87d42-ac99-4fad-8486-bb910f49f03c ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x80602a6 <max_window_name_width+70>: mov 0x204(%eax),%eax
 PC (0x080602a6) ok
 source "0x204(%eax)" (0x00000204) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 max_window_name_width ()
 update_window_decoration_size ()
 ?? ()
 g_cclosure_marshal_VOID__OBJECTv () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
Title: gtk-window-decorator crashed with SIGSEGV in max_window_name_width()
UpgradeStatus: Upgraded to precise on 2012-03-13 (9 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 11/11/2008
dmi.bios.vendor: Acer
dmi.bios.version: V1.14
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Aspire 2930Z
dmi.board.vendor: Acer
dmi.board.version: V1.14
dmi.chassis.type: 1
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.14
dmi.modalias: dmi:bvnAcer:bvrV1.14:bd11/11/2008:svnAcer:pnAspire2930Z:pvrV1.14:rvnAcer:rnAspire2930Z:rvrV1.14:cvnAcer:ct1:cvrV1.14:
dmi.product.name: Aspire 2930Z
dmi.product.version: V1.14
dmi.sys.vendor: Acer
version.compiz: compiz 1:0.9.7.0+bzr3035-0ubuntu1
version.libdrm2: libdrm2 2.4.30-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.1-0ubuntu5
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.1-0ubuntu5
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #948580, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.