unity-panel-service crashed with SIGSEGV in g_type_check_instance_cast()

[Chito Tuason]

everytime I login
using unity2d
ati x1200 on msi-u210

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: unity-services 4.10.2-0ubuntu2
ProcVersionSignature: Ubuntu 3.0.0-9.14-generic 3.0.3
Uname: Linux 3.0.0-9-generic i686
Architecture: i386
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CrashCounter: 1
Date: Mon Aug 29 16:58:47 2011
DistUpgraded: Log time: 2011-08-05 00:00:59.171815
DistroCodename: oneiric
DistroVariant: ubuntu
ExecutablePath: /usr/lib/unity/unity-panel-service
GlAlternative: lrwxrwxrwx 1 root root 24 2011-04-08 00:12 /etc/alternatives/gl_conf -> /usr/lib/mesa/ld.so.conf
GraphicsCard:
 ATI Technologies Inc RS690M [Radeon X1200 Series] [1002:791f] (prog-if 00 [VGA controller])
   Subsystem: Micro-Star International Co., Ltd. Device [1462:1022]
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
MachineType: Micro-Star International U210
ProcCmdline: /usr/lib/unity/unity-panel-service
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=en_PH.UTF-8
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-9-generic root=UUID=adfcfec3-41ec-47e4-bb2e-0aa493192c5e ro quiet splash radeon.modeset=1 vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0xa675d8 <g_type_check_instance_cast+56>: mov (%eax),%ebp
 PC (0x00a675d8) ok
 source "(%eax)" (0x00000008) not located in a known VMA region (needed readable region)!
 destination "%ebp" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 g_type_check_instance_cast () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/libgtk-3.so.0
 g_cclosure_marshal_VOID__PARAM () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
 g_closure_invoke () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
Title: unity-panel-service crashed with SIGSEGV in g_type_check_instance_cast()
UdevDb: Error: [Errno 2] No such file or directory
UpgradeStatus: Upgraded to oneiric on 2011-08-24 (5 days ago)
UserGroups: adm admin cdrom dialout dip fax floppy fuse libvirtd lpadmin plugdev sambashare tape video
dmi.bios.date: 10/12/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 080015
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: MS-1241
dmi.board.vendor: MSI
dmi.board.version: Ver 1.000
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 10
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080015:bd10/12/2009:svnMicro-StarInternational:pnU210:pvrVer1.000:rvnMSI:rnMS-1241:rvrVer1.000:cvnToBeFilledByO.E.M.:ct10:cvrToBeFilledByO.E.M.:
dmi.product.name: U210
dmi.product.version: Ver 1.000
dmi.sys.vendor: Micro-Star International
version.compiz: compiz 1:0.9.5.92+bzr2791-0ubuntu1
version.libdrm2: libdrm2 2.4.26+git20110808.2acaf160-0ubuntu0sarvatt
version.libgl1-mesa-dri: libgl1-mesa-dri 7.12.0~git20110826.3bcb9a85-0ubuntu0sarvatt
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.12.0~git20110826.3bcb9a85-0ubuntu0sarvatt
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0+git20110408.68a6a18f-0ubuntu0sarvatt
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99+git20110819.64f237a4-0ubuntu0sarvatt
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110823.169512fb-0ubuntu0sarvatt

[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 #829367, 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.