unity-window-decorator crashed with SIGSEGV in event_filter_func()

[tom bradley]

experienced the crash while trying to open update manager

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: compiz-gnome 1:0.9.5.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-6.7-generic 3.0.0-rc7
Uname: Linux 3.0.0-6-generic i686
Architecture: i386
CasperVersion: 1.271
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unitydialog,unityshell]
CompositorRunning: compiz
Date: Mon Jul 25 07:48:39 2011
DistUpgraded: Fresh install
DistroCodename: oneiric
DistroVariant: ubuntu
ExecutablePath: /usr/bin/unity-window-decorator
GraphicsCard:
 Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller [8086:2592] (rev 03) (prog-if 00 [VGA controller])
   Subsystem: IBM Device [1014:0582]
   Subsystem: IBM Device [1014:0582]
LightdmGreeterLog:

LiveMediaBuild: Ubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110724)
MachineType: IBM 1875M2U
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdline: /usr/bin/unity-window-decorator
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
SegvAnalysis:
 Segfault happened at: 0x8059437 <event_filter_func+583>: mov 0x174(%eax),%edx
 PC (0x08059437) ok
 source "0x174(%eax)" (0x00000174) not located in a known VMA region (needed readable region)!
 destination "%edx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 event_filter_func ()
 ?? () from /usr/lib/i386-linux-gnu/libgdk-x11-2.0.so.0
 ?? () from /usr/lib/i386-linux-gnu/libgdk-x11-2.0.so.0
 ?? () from /usr/lib/i386-linux-gnu/libgdk-x11-2.0.so.0
 g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
Title: unity-window-decorator crashed with SIGSEGV in event_filter_func()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 11/25/2005
dmi.bios.vendor: IBM
dmi.bios.version: 70ET62WW (1.22 )
dmi.board.name: 1875M2U
dmi.board.vendor: IBM
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: IBM
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnIBM:bvr70ET62WW(1.22):bd11/25/2005:svnIBM:pn1875M2U:pvrThinkPadT43:rvnIBM:rn1875M2U:rvrNotAvailable:cvnIBM:ct10:cvrNotAvailable:
dmi.product.name: 1875M2U
dmi.product.version: ThinkPad T43
dmi.sys.vendor: IBM
peripherals:
 /desktop/gnome/peripherals/keyboard:
   /desktop/gnome/peripherals/keyboard/kbd:
    layouts = [us,gh,gb,ie,za,ng,ph,us altgr-intl,us hbs,in eng,ca eng,us euro,us intl,us alt-intl,us colemak,us dvorak,us dvorak-intl,us dvorak-alt-intl,us dvorak-l,us dvorak-r,us dvorak-classic,us dvp,us mac,us olpc2,gh generic,gh gillbt,gb extd,gb intl,gb dvorak,gb dvorakukp,gb mac,gb mac_intl,gb colemak,ie UnicodeExpert,ie ogam,ie ogam_is434,ph capewell-dvorak,ph capewell-qwerf2k6,ph colemak,ph dvorak]
  /desktop/gnome/peripherals/mouse:
   cursor_theme = DMZ-White
version.compiz: compiz 1:0.9.5.0-0ubuntu1
version.libdrm2: libdrm2 2.4.26-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11~1-0ubuntu4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11~1-0ubuntu4
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.2-1ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.0-3ubuntu2
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 #726101, 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.