gnome-shell crashed with SIGSEGV in g_slice_alloc()

[Andrew Hunter]

Gnome Shell seems to crash randomly when I switch contexts with the super key or "Activites" hot corner.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: gnome-shell 3.2.1-0ubuntu1.1
ProcVersionSignature: Ubuntu 3.0.0-14.23-generic 3.0.9
Uname: Linux 3.0.0-14-generic x86_64
NonfreeKernelModules: fglrx blackmagic
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
CrashCounter: 1
Date: Fri Jan 6 15:33:27 2012
ExecutablePath: /usr/bin/gnome-shell
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110425.2)
ProcCmdline: /usr/bin/gnome-shell
ProcEnviron:
 LANGUAGE=en_CA:en
 PATH=(custom, no user)
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f8350cbf0a8 <g_slice_alloc+280>: mov 0x8(%rax),%rbx
 PC (0x7f8350cbf0a8) ok
 source "0x8(%rax)" (0x100000007) not located in a known VMA region (needed readable region)!
 destination "%rbx" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: gnome-shell
StacktraceTop:
 g_slice_alloc () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_slice_alloc0 () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libcogl.so.5
 ?? () from /usr/lib/x86_64-linux-gnu/libcogl.so.5
 ?? () from /usr/lib/x86_64-linux-gnu/libcogl.so.5
Title: gnome-shell crashed with SIGSEGV in g_slice_alloc()
UpgradeStatus: Upgraded to oneiric on 2011-10-14 (84 days ago)
UserGroups: adm admin audio cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #863299, 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.