unity-2d-panel crashed with SIGSEGV in malloc()

[miked]

Dell Inspiron 1150 Laptop without Hard Drive Running Ubuntu 11.10 Oneric Ocelot Beta 1 off USB Drive with updates from Natty Narwhal 11.04 Final

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: unity-2d-panel 4.8.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
Uname: Linux 3.0.0-11-generic i686
ApportVersion: 1.23-0ubuntu1
Architecture: i386
Date: Sat Sep 17 18:14:48 2011
ExecutablePath: /usr/bin/unity-2d-panel
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
ProcCmdline: unity-2d-panel
ProcCwd: /home/guest
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x997af08: mov 0x4(%edi),%edx
 PC (0x0997af08) ok
 source "0x4(%edi)" (0xd9c1a6c5) not located in a known VMA region (needed readable region)!
 destination "%edx" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: unity-2d
StacktraceTop:
 ?? () from /lib/i386-linux-gnu/libc.so.6
 ?? () from /lib/i386-linux-gnu/libc.so.6
 malloc () from /lib/i386-linux-gnu/libc.so.6
 qMalloc(unsigned int) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
 QListData::detach(int) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
Title: unity-2d-panel crashed with SIGSEGV in malloc()
UpgradeStatus: Upgraded to oneiric on 2011-09-12 (8 days ago)
UserGroups:

XsessionErrors:
 (unity-panel-service:1609): libindicator-WARNING **: IndicatorObject class does not have an accessible description.
 (unity-panel-service:1609): libindicator-WARNING **: IndicatorObject class does not have an accessible description.
 (unity-panel-service:1609): GLib-CRITICAL **: g_error_free: assertion `error != NULL' failed

[Apport retracing service (apport)]

StacktraceTop:
 malloc_consolidate (av=0x9a85400) at malloc.c:5155
 malloc_consolidate (av=0x9a85400) at malloc.c:5089
 _int_malloc (av=0x9a85400, bytes=665716884) at malloc.c:4373
 __GI___libc_malloc (bytes=665716884) at malloc.c:3660
 qMalloc (size=665716884) at global/qmalloc.cpp:55