compiz crashed with SIGSEGV in nux::IOpenGLFrameBufferObject::Deactivate()

[toti]

Binary package hint: compiz

good job everyone:)

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: compiz-core 1:0.9.2.1+glibmainloop4-0ubuntu8
ProcVersionSignature: Ubuntu 2.6.38-1.28-generic 2.6.38-rc2
Uname: Linux 2.6.38-1-generic x86_64
Architecture: amd64
CrashCounter: 1
DRM.card0.VGA.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1280x1024 1024x768 1024x768 1024x768 800x600 800x600 800x600 800x600 640x480 640x480 720x400
 edid-base64: AP///////wBCkwQDuBYDAAcQAQMIIBgb6FwRnllHmycQSE+hSgAxWQEBRVlFaGFZgYAAAAAAMCoAmFEALEAwcBMANuYQAAAe6iQAYEEAKDAwYBMANuYQAAAeAAAA/QAyoB5GCwAKICAgICAgAAAA/wBGWVdRNjIwMjAyNDI0ALY=
Date: Tue Feb 1 18:31:11 2011
DistUpgraded: Yes, recently upgraded Log time: 2011-01-29 20:24:10.973910
DistroCodename: natty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 Subsystem: IBM Device [1014:02f9]
   Subsystem: IBM Device [1014:02f9]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110122)
MachineType: IBM 8099W1M
ProcCmdline: /usr/bin/compiz
ProcEnviron:
 LANGUAGE=it_IT:it:en_GB:en
 LANG=it_IT.UTF-8
 LC_MESSAGES=it_IT.utf8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-1-generic root=UUID=d4ea70ca-dded-47fb-bf75-1a45d270281a ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x7f9d0186a1c5 <_ZN3nux24IOpenGLFrameBufferObject10DeactivateEv+213>: mov 0x6c(%rbx),%r12d
 PC (0x7f9d0186a1c5) ok
 source "0x6c(%rbx)" (0x0000006c) not located in a known VMA region (needed readable region)!
 destination "%r12d" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 nux::IOpenGLFrameBufferObject::Deactivate() () from /usr/lib/libnux-graphics-0.9.so.0
 nux::IOpenGLFrameBufferObject::FormatFrameBufferObject(int, int, nux::BitmapFormat) () from /usr/lib/libnux-graphics-0.9.so.0
 nux::WindowCompositor::FormatRenderTargets(int, int) () from /usr/lib/libnux-0.9.so.0
 nux::WindowThread::ThreadCtor(_XDisplay*, unsigned long, __GLXcontextRec*) () from /usr/lib/libnux-0.9.so.0
 nux::CreateFromForeignWindow(unsigned long, __GLXcontextRec*, void (*)(nux::NThread*, void*), void*) () from /usr/lib/libnux-0.9.so.0
Title: compiz crashed with SIGSEGV in nux::IOpenGLFrameBufferObject::Deactivate()
UserGroups: adm admin cdrom dialout lpadmin netdev plugdev sambashare
XsessionErrors:
 (nautilus:1384): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
 (nm-applet:1391): Gdk-CRITICAL **: IA__gdk_window_thaw_toplevel_updates_libgtk_only: assertion `private->update_and_descendants_freeze_count > 0' failed
dmi.bios.date: 09/15/2006
dmi.bios.vendor: IBM
dmi.bios.version: 2EKT41AIT
dmi.board.name: IBM
dmi.board.vendor: IBM
dmi.chassis.asset.tag: �������������������������
dmi.chassis.type: 4
dmi.chassis.vendor: IBM
dmi.modalias: dmi:bvnIBM:bvr2EKT41AIT:bd09/15/2006:svnIBM:pn8099W1M:pvrThinkCentreM52:rvnIBM:rnIBM:rvr:cvnIBM:ct4:cvr:
dmi.product.name: 8099W1M
dmi.product.version: ThinkCentre M52
dmi.sys.vendor: IBM
version.libdrm2: libdrm2 2.4.23-1ubuntu3
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10-1ubuntu1
version.xserver-xorg: xserver-xorg 1:7.6~3ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.13.2+git20110124.fadee040-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu4

[Apport retracing service (apport)]

StacktraceTop:
 nux::IOpenGLFrameBufferObject::Deactivate (this=0x0)
 nux::IOpenGLFrameBufferObject::FormatFrameBufferObject (this=0x0, Width=1024, Height=768, PixelFormat=nux::BITFMT_R8G8B8A8)
 nux::WindowCompositor::FormatRenderTargets (
 nux::WindowThread::ThreadCtor (this=0x1993c60,