compiz crashed with SIGSEGV in PluginClassHandler<DecorWindow, CompWindow, 0>::get()

[Saborus]

Binary package hint: compiz

i checked "shift Switcher" when it occured.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: compiz-core 1:0.9.4+bzr20110406-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.41-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,decor,resize,move,grid,gnomecompat,mousepoll,snap,place,vpswitch,imgpng,shift,compiztoolbox,session,regex,wall,unitymtgrabhandles,animation,workarounds,expo,ezoom,staticswitcher,fade,scale,unityshell]
CompositorRunning: compiz
DRM.card0.VGA.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1280x1024 1280x1024 1152x864 1024x768 1024x768 1024x768 832x624 800x600 800x600 800x600 800x600 640x480 640x480 640x480 640x480 720x400
 edid-base64: AP///////wBMLRUBOTFTRygPAQNsJh54Km+GolpNlCQaT1S/74CBgHFPAQEBAQEBAQEBAQEBMCoAmFEAKkAwcBMAeC0RAAAeAAAA/QA4Sx5RDgAKICAgICAgAAAA/ABTeW5jTWFzdGVyCiAgAAAA/wBIOU5ZQTA5NTk2CiAgAC8=
Date: Thu Apr 7 15:36:26 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 ATI Technologies Inc RV280 [Radeon 9200 SE] [1002:5964] (rev 01) (prog-if 00 [VGA controller])
   Subsystem: PC Partner Limited Device [174b:7c26]
   Subsystem: PC Partner Limited Device [174b:7c27]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110330)
InstallationMedia_: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110330)
MachineType: Hewlett-Packard HP d330 uT(DF380T)
ProcCmdline: /usr/bin/compiz
ProcEnviron:
 LANGUAGE=nl_BE:nl:en
 LANG=nl_BE.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=e36f002e-b5b5-45a1-a55d-d31bdc28212c ro quiet splash vt.handoff=7
ProcVersionSignature_: Ubuntu 2.6.38-8.41-generic 2.6.38.2
Renderer: Unknown
SegvAnalysis:
 Segfault happened at: 0x61ab72 <_ZN18PluginClassHandlerI11DecorWindow10CompWindowLi0EE3getEPS1_+290>: mov 0x18(%ecx),%edx
 PC (0x0061ab72) ok
 source "0x18(%ecx)" (0x00000018) not located in a known VMA region (needed readable region)!
 destination "%edx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 PluginClassHandler<DecorWindow, CompWindow, 0>::get(CompWindow*) () from /usr/lib/compiz/libdecor.so
 DecorScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libdecor.so
 CompScreen::handleEvent(_XEvent*) ()
 ResizeScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libresize.so
 CompScreen::handleEvent(_XEvent*) ()
Title: compiz crashed with SIGSEGV in PluginClassHandler<DecorWindow, CompWindow, 0>::get()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors:
 (gnome-settings-daemon:1315): Gdk-CRITICAL **: IA__gdk_window_thaw_toplevel_updates_libgtk_only: assertion `private->update_and_descendants_freeze_count > 0' failed
 (nm-applet:1376): Gdk-CRITICAL **: IA__gdk_window_thaw_toplevel_updates_libgtk_only: assertion `private->update_and_descendants_freeze_count > 0' failed
 (nautilus:1359): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
dmi.bios.date: 05/05/2003
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 786B2 v1.10
dmi.board.name: 085Ch
dmi.board.vendor: Hewlett-Packard
dmi.chassis.asset.tag: CZC3230MNQ
dmi.chassis.type: 7
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr786B2v1.10:bd05/05/2003:svnHewlett-Packard:pnHPd330uT(DF380T):pvr:rvnHewlett-Packard:rn085Ch:rvr:cvnHewlett-Packard:ct7:cvr:
dmi.product.name: HP d330 uT(DF380T)
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.4+bzr20110406-0ubuntu1
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.1-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu6
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu6

[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 #743807, 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.