compiz crashed with SIGSEGV in g_closure_invoke() pressing Alt+F2

Binary package hint: compiz

Crashes when pressing <Alt>+<F2> while firefox was open in maximized window.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: compiz-core 1:0.9.4git20110322-0ubuntu5
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
Architecture: amd64
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,unityshell]
CompositorRunning: compiz
CrashCounter: 1
DRM.card0.DVI.D.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1440x900 1152x864 1024x768 800x600 640x480 720x400 640x400 640x350
 edid-base64: AP///////wBMo0c4AAAAAAAQAQOAJRd4Cof1lFdPjCcnUFQAAAABAQEBAQEBAQEBAQEBAQEBnyWgQFGEDDBAIDMAb+YQAAAZAAAADwAAAAAAAAAAAHjmAiMAAAAA/gBTQU1TVU5HCiAgICAgAAAA/gBMVE4xNzBYMi1MMDIKAPE=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
Date: Fri Apr 1 12:52:02 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 nVidia Corporation G73 [GeForce Go 7600] [10de:0398] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Device [103c:30b7]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110330)
InstallationMedia_: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110330)
MachineType: Hewlett-Packard HP Pavilion dv9000 (RY527EA#ABF)
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=de_DE:en
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-7-generic root=UUID=a1bf4135-633f-4749-ae26-cde165fd7ea1 ro quiet splash vt.handoff=7
ProcVersionSignature_: Ubuntu 2.6.38-7.39-generic 2.6.38
Renderer: Unknown
SegvAnalysis:
 Segfault happened at: 0x7fb33128381c <g_closure_invoke+348>: mov (%rbx),%rdx
 PC (0x7fb33128381c) ok
 source "(%rbx)" (0x01000000) not located in a known VMA region (needed readable region)!
 destination "%rdx" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
Title: compiz crashed with SIGSEGV in g_closure_invoke()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors:
 (nautilus:4731): Gtk-WARNING **: Change Desktop Background: missing action Change Desktop Background
 (nautilus:4731): Gtk-WARNING **: Ubuntu Documentation: missing action Ubuntu Documentation
 (nautilus:4731): Gtk-WARNING **: Change Desktop Background: missing action Change Desktop Background
 (nautilus:4731): Gtk-WARNING **: Ubuntu Documentation: missing action Ubuntu Documentation
 (nautilus:4731): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
dmi.bios.date: 03/09/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.42
dmi.board.name: 30B9
dmi.board.vendor: Quanta
dmi.board.version: 65.2C
dmi.chassis.type: 10
dmi.chassis.vendor: Quanta
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.42:bd03/09/2009:svnHewlett-Packard:pnHPPaviliondv9000(RY527EA#ABF):pvrRev1:rvnQuanta:rn30B9:rvr65.2C:cvnQuanta:ct10:cvrN/A:
dmi.product.name: HP Pavilion dv9000 (RY527EA#ABF)
dmi.product.version: Rev 1
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.4git20110322-0ubuntu5
version.libdrm2: libdrm2 2.4.23-1ubuntu5
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6~3ubuntu11
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu6