unity-panel-service crashed with SIGSEGV in g_type_check_instance_is_a()

[hcmeyer]

Binary package hint: indicator-appmenu

at login to Unity desktop

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: indicator-appmenu 0.1.91-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.37-12.26-generic 2.6.37
Uname: Linux 2.6.37-12-generic i686
Architecture: i386
CrashCounter: 1
Date: Wed Jan 26 09:18:53 2011
ExecutablePath: /usr/lib/unity/unity-panel-service
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20101204)
ProcCmdline: /usr/lib/unity/unity-panel-service
ProcEnviron:
 SHELL=/bin/bash
 LC_MESSAGES=en_AG.utf8
 PATH=(custom, user)
 LANGUAGE=en_US.UTF-8:en
 LANG=en_US.UTF-8
SegvAnalysis:
 Segfault happened at: 0x567078 <g_type_check_instance_is_a+136>: testb $0x4,0xe(%edx)
 PC (0x00567078) ok
 source "$0x4" ok
 destination "0xe(%edx)" (0x2009000e) not located in a known VMA region (needed writable region)!
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: indicator-appmenu
StacktraceTop:
 g_type_check_instance_is_a () from /usr/lib/libgobject-2.0.so.0
 gtk_label_set_text_with_mnemonic () from /usr/lib/libgtk-x11-2.0.so.0
 ?? () from /usr/lib/indicators/4/libappmenu.so
 ?? () from /usr/lib/libdbusmenu-glib.so.3
 g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
Title: unity-panel-service crashed with SIGSEGV in g_type_check_instance_is_a()
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors: (apport-gtk:1700): Gtk-WARNING **: /build/buildd/gtk+2.0-2.23.90/gtk/gtktreestore.c:765: Unable to convert from PyObject to gchararray

[Apport retracing service (apport)]

StacktraceTop:
 g_type_check_instance_is_a (type_instance=0x909ecc8,
 g_variant_unlock (value=Unhandled dwarf expression opcode 0x9f