compiz crashed with SIGSEGV in _XFreeEventCookies()

[Mio]

i couldn't spot what coused it to crash.. if any more info are needed just ask :)

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: compiz-core 1:0.9.5.94+bzr2803-0ubuntu5
ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
Uname: Linux 3.0.0-11-generic x86_64
NonfreeKernelModules: nvidia
.proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 280.13 Wed Jul 27 16:53:56 PDT 2011
 GCC version: gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu2)
.tmp.unity.support.test.0:

ApportVersion: 1.23-0ubuntu1
Architecture: amd64
CompizPlugins: [core,bailer,composite,opengl,compiztoolbox,decor,gnomecompat,screenshot,move,vpswitch,mousepoll,resize,place,wall,imgpng,regex,animation,fade,unitymtgrabhandles,grid,commands,session,workarounds,scale,expo,ezoom,unityshell]
CompositorRunning: compiz
CrashCounter: 1
Date: Tue Sep 20 20:56:44 2011
DistUpgraded: Log time: 2011-09-03 13:43:04.107590
DistroCodename: oneiric
DistroVariant: ubuntu
DkmsStatus:
 nvidia-current, 280.13, 3.0.0-11-generic, x86_64: installed
 vboxhost, 4.0.12, 3.0.0-11-generic, x86_64: installed
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 nVidia Corporation G86 [GeForce 8600M GS] [10de:0425] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Sony Corporation Device [104d:9005]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110413)
JockeyStatus:
 xorg:nvidia_173 - NVIDIA accelerated graphics driver (Proprietary, Disabled, Not in use)
 xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, In use)
 kmod:nvidia_173 - NVIDIA binary Xorg driver, kernel module and VDPAU library (Proprietary, Disabled, Not in use)
 kmod:nvidia_current - nvidia_current (Proprietary, Disabled, Not in use)
MachineType: Sony Corporation VGN-FZ31S
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdline: /usr/bin/compiz
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.0.0-11-generic root=UUID=d8129833-ef59-41c9-aafc-285fe4877e80 ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x7fe5311294f3 <_XFreeEventCookies+19>: mov 0x40(%rax),%rbp
 PC (0x7fe5311294f3) ok
 source "0x40(%rax)" (0x00001290) not located in a known VMA region (needed readable region)!
 destination "%rbp" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 _XFreeEventCookies () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 XNextEvent () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 PrivateScreen::processEvents() ()
 CompEventSource::callback() ()
 Glib::Source::dispatch_vfunc(_GSource*, int (*)(void*), void*) () from /usr/lib/libglibmm-2.4.so.1
Title: compiz crashed with SIGSEGV in _XFreeEventCookies()
UpgradeStatus: Upgraded to oneiric on 2011-09-16 (4 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare vboxusers
dmi.bios.date: 12/21/2007
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: R2110J7
dmi.board.asset.tag: N/A
dmi.board.name: VAIO
dmi.board.vendor: Sony Corporation
dmi.board.version: N/A
dmi.chassis.asset.tag: N/A
dmi.chassis.type: 10
dmi.chassis.vendor: Sony Corporation
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrR2110J7:bd12/21/2007:svnSonyCorporation:pnVGN-FZ31S:pvrC6008770:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
dmi.product.name: VGN-FZ31S
dmi.product.version: C6008770
dmi.sys.vendor: Sony Corporation
version.compiz: compiz 1:0.9.5.94+bzr2803-0ubuntu5
version.ia32-libs: ia32-libs 20090808ubuntu22
version.libdrm2: libdrm2 2.4.26-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #851472, 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.