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

[Sheldon Taylor]

crashed right after startup

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: unity-2d-panel 4.6.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-10.16-generic 3.0.4
Uname: Linux 3.0.0-10-generic i686
ApportVersion: 1.22.1-0ubuntu2
Architecture: i386
Date: Fri Sep 9 12:41:10 2011
ExecutablePath: /usr/bin/unity-2d-panel
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110803.1)
ProcCmdline: unity-2d-panel
SegvAnalysis:
 Segfault happened at: 0xb44f17: mov 0x8(%esi),%eax
 PC (0x00b44f17) ok
 source "0x8(%esi)" (0xc8ce95b9) not located in a known VMA region (needed readable region)!
 destination "%eax" 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 2011-08-23 (17 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 malloc_consolidate (av=0xc4f400) at malloc.c:5161
 malloc_consolidate (av=0xc4f400) at malloc.c:5089
 _int_malloc (av=0xc4f400, bytes=590990420) at malloc.c:4373
 __GI___libc_malloc (bytes=590990420) at malloc.c:3660
 qMalloc (size=590990420) at global/qmalloc.cpp:55