unity-2d-panel crashed with SIGSEGV in IndicatorsWidget::onEntryRemoved()

[shrodes]

Occured just after startup to desktop, no programs open.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: unity-2d-panel 4.6.1-0ubuntu1
Uname: Linux 2.6.39-02063902-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu1
Architecture: amd64
CrashCounter: 1
Date: Thu Sep 15 22:49:14 2011
ExecutablePath: /usr/bin/unity-2d-panel
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcCmdline: unity-2d-panel
ProcEnviron:
 LANGUAGE=en_AU:en_US:en
 PATH=(custom, no user)
 LANG=en_AU.utf8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7fd98e1ce823 <_ZN16IndicatorsWidget14onEntryRemovedERKSs+131>: mov (%rdx),%rsi
 PC (0x7fd98e1ce823) ok
 source "(%rdx)" (0xfffffffc72de1d38) not located in a known VMA region (needed readable region)!
 destination "%rsi" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: unity-2d
StacktraceTop:
 IndicatorsWidget::onEntryRemoved(std::string const&) () from /usr/lib/libunity-2d-private.so.0
 unity::indicator::Indicator::~Indicator() () from /usr/lib/libunity-core-4.0.so.4
 boost::detail::sp_counted_impl_p<unity::indicator::Indicator>::dispose() () from /usr/lib/libunity-core-4.0.so.4
 QList<boost::shared_ptr<unity::indicator::Indicator> >::~QList() () from /usr/lib/libunity-2d-private.so.0
 IndicatorsWidget::~IndicatorsWidget() () from /usr/lib/libunity-2d-private.so.0
Title: unity-2d-panel crashed with SIGSEGV in IndicatorsWidget::onEntryRemoved()
UpgradeStatus: Upgraded to oneiric on 2011-09-01 (15 days ago)
UserGroups: adm admin cdrom dialout fuse lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 operator() (_A_a1=..., this=<optimized out>, _A_a2=<optimized out>, _A_a3=<optimized out>, _A_a4=<optimized out>, _A_a5=<optimized out>) at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:2127
 operator()<const std::basic_string<char>&, const int&, const int&, const int&, const int&> (_A_arg1=..., this=<optimized out>, _A_arg2=<optimized out>, _A_arg3=<optimized out>, _A_arg4=<optimized out>, _A_arg5=<optimized out>) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:166
 sigc::internal::slot_call5<sigc::bound_mem_functor5<void, IndicatorsManager, std::string const&, int, int, int, int>, void, std::string const&, int, int, int, int>::call_it (rep=<optimized out>, a_1=..., a_2=<optimized out>, a_3=<optimized out>, a_4=<optimized out>, a_5=<optimized out>) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:293
 ?? ()
 ?? ()