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

[SlugiusRex]

Selected "shutdown" ~ but system did not actually power off. Instead this exception occured.

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 x86_64
ApportVersion: 1.23-0ubuntu1
Architecture: amd64
CrashCounter: 1
Date: Thu Sep 15 15:40:07 2011
ExecutablePath: /usr/bin/unity-2d-panel
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110803.1)
ProcCmdline: unity-2d-panel
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f315fa5d0e3 <_ZN13MenuBarWidget14onEntryRemovedERKSs+131>: mov (%rdx),%rsi
 PC (0x7f315fa5d0e3) ok
 source "(%rdx)" (0x375378908) not located in a known VMA region (needed readable region)!
 destination "%rsi" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: unity-2d
StacktraceTop:
 MenuBarWidget::onEntryRemoved(std::string const&) () from /usr/lib/unity-2d/plugins/panel/libpanelplugin-appname.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
 MenuBarWidget::~MenuBarWidget() () from /usr/lib/unity-2d/plugins/panel/libpanelplugin-appname.so.0
 QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
Title: unity-2d-panel crashed with SIGSEGV in MenuBarWidget::onEntryRemoved()
UpgradeStatus: Upgraded to oneiric on 2011-08-25 (21 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 MenuBarWidget::onEntryRemoved (this=0x996690, entry_id=...) at /build/buildd/unity-2d-4.8.0/panel/applets/appname/menubarwidget.cpp:112
 emit (_A_a1=..., impl=<optimized out>) at /usr/include/sigc++-2.0/sigc++/signal.h:1010
 emit (_A_a1=..., this=<optimized out>) at /usr/include/sigc++-2.0/sigc++/signal.h:2781
 operator() (_A_a1=..., this=0x9c0398) at /usr/include/sigc++-2.0/sigc++/signal.h:2789
 unity::indicator::Indicator::~Indicator (this=0x9c0380, __in_chrg=<optimized out>) at /build/buildd/unity-4.16.0/UnityCore/Indicator.cpp:39

[Launchpad Janitor (janitor)]

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