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

[googao]

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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
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu1
Architecture: i386
CrashCounter: 1
Date: Tue Sep 20 15:45:20 2011
ExecutablePath: /usr/bin/unity-2d-panel
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20110901)
ProcCmdline: unity-2d-panel
ProcEnviron:
 LANGUAGE=zh_CN:zh
 PATH=(custom, no user)
 LANG=zh_CN.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x2dcef08: mov 0x4(%edi),%edx
 PC (0x02dcef08) ok
 source "0x4(%edi)" (0xa8b04995) 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: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 malloc_consolidate (av=0x2ed9400) at malloc.c:5155
 malloc_consolidate (av=0x2ed9400) at malloc.c:5089
 _int_malloc (av=0x2ed9400, bytes=582745684) at malloc.c:4373
 __GI___libc_malloc (bytes=582745684) at malloc.c:3660
 qMalloc (size=582745684) at global/qmalloc.cpp:55

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.