compiz crashed with SIGSEGV in PanelMenuView::OnMaximizedGrab()

[JanG]

Binary package hint: unity

Unity suddenly crashed when browsing with Firefox. Thunderbird and Update Manager where running, Update Manager had finished installing Updates (including Unity) a few minutes before.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: unity 3.8.2-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
Architecture: amd64
CheckboxSubmission: adfe912a677b9e8917f88ee91fbea346
CheckboxSystem: b1865df84255b8716d3bcc269ff410d1
CrashCounter: 1
Date: Fri Apr 1 22:57:59 2011
ExecutablePath: /usr/bin/compiz
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=de:en
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x1beeab0: and %al,(%rax)
 PC (0x01beeab0) in non-executable VMA region: 0x0075b000-0x02c41000 rw-p [heap]
 source "%al" ok
 destination "(%rax)" (0x02a64140) ok
SegvReason: executing writable VMA [heap]
Signal: 11
SourcePackage: unity
StacktraceTop:
 ?? ()
 PanelMenuView::OnMaximizedGrab(int, int) () from /usr/lib/compiz/libunityshell.so
 ?? ()
Title: compiz crashed with SIGSEGV in PanelMenuView::OnMaximizedGrab()
UpgradeStatus: Upgraded to natty on 2011-03-29 (3 days ago)
UserGroups: adm admin cdrom dialout disk lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 ?? ()
 PanelMenuView::OnMaximizedGrab(int, int) () from /usr/lib/compiz/libunityshell.so
 ?? ()

[Apport retracing service (apport)]

Thank you for your report!

However, processing it in order to get sufficient information for the
developers failed (it does not generate an useful symbolic stack trace). This
might be caused by some outdated packages which were installed on your system
at the time of the report:

libgcc1: installed version 1:4.5.2-7ubuntu1, latest version: 1:4.5.2-8ubuntu1
libglib2.0-bin: installed version 2.28.4-0ubuntu2, latest version: 2.28.5-0ubuntu1
libudev0: installed version 166-0ubuntu6, latest version: 167-0ubuntu1
libdrm-intel1-dbg: installed version 2.4.23-1ubuntu5, latest version: 2.4.23-1ubuntu6
libdrm-nouveau1a-dbg: installed version 2.4.23-1ubuntu5, latest version: 2.4.23-1ubuntu6
libgcc1-dbg: installed version 1:4.5.2-7ubuntu1, latest version: 1:4.5.2-8ubuntu1
tzdata: installed version 2011d-1, latest version: 2011e-1
unity-dbg: installed version 3.8.2-0ubuntu1, latest version: 0.2.46-0ubuntu5
libgtk2.0-common: installed version 2.24.3-0ubuntu4, latest version: 2.24.4-0ubuntu1
libglib2.0-data: installed version 2.28.4-0ubuntu2, latest version: 2.28.5-0ubuntu1
libdrm2-dbg: installed version 2.4.23-1ubuntu5, latest version: 2.4.23-1ubuntu6
libglib2.0-0: installed version 2.28.4-0ubuntu2, latest version: 2.28.5-0ubuntu1
cpp-4.5: installed version 4.5.2-7ubuntu1, latest version: 4.5.2-8ubuntu1
libgtk2.0-0-dbg: installed version 2.24.3-0ubuntu4, latest version: 2.24.4-0ubuntu1
gcc-4.5-base: installed version 4.5.2-7ubuntu1, latest version: 4.5.2-8ubuntu1
libdrm-intel1: installed version 2.4.23-1ubuntu5, latest version: 2.4.23-1ubuntu6
libgtk2.0-bin: installed version 2.24.3-0ubuntu4, latest version: 2.24.4-0ubuntu1
udev: installed version 166-0ubuntu6, latest version: 167-0ubuntu1
libdrm-nouveau1a: installed version 2.4.23-1ubuntu5, latest version: 2.4.23-1ubuntu6
libstdc++6: installed version 4.5.2-7ubuntu1, latest version: 4.5.2-8ubuntu1
libdrm-radeon1-dbg: installed version 2.4.23-1ubuntu5, latest version: 2.4.23-1ubuntu6
libgtk2.0-0: installed version 2.24.3-0ubuntu4, latest version: 2.24.4-0ubuntu1
libdrm-radeon1: installed version 2.4.23-1ubuntu5, latest version: 2.4.23-1ubuntu6
libdrm2: installed version 2.4.23-1ubuntu5, latest version: 2.4.23-1ubuntu6
libglib2.0-0-dbg: installed version 2.28.4-0ubuntu2, latest version: 2.28.5-0ubuntu1

Please upgrade your system to the latest package versions. If you still
encounter the crash, please file a new report.

Thank you for your understanding, and sorry for the inconvenience!