gnome-panel crashed with SIGSEGV in gtk_widget_reparent_fixup_child()

[Willams Costa]

Right at startup

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: gnome-panel 1:3.5.4-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24
Uname: Linux 3.2.0-29-generic x86_64
ApportVersion: 2.4-0ubuntu8
Architecture: amd64
CrashCounter: 1
Date: Sat Sep 8 11:50:25 2012
ExecutablePath: /usr/bin/gnome-panel
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
ProcCmdline: gnome-panel
ProcEnviron:
 LANGUAGE=pt_BR:
 PATH=(custom, no user)
 LANG=pt_BR.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7fd52074ee05: mov 0x78(%rax),%edx
 PC (0x7fd52074ee05) ok
 source "0x78(%rax)" (0xaaaaaaaaaaaaab22) not located in a known VMA region (needed readable region)!
 destination "%edx" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: gnome-panel
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: gnome-panel crashed with SIGSEGV in g_signal_emit_valist()
UpgradeStatus: Upgraded to quantal on 2012-09-07 (0 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 gtk_widget_reparent_fixup_child (client_data=0x77a820, widget=0x79a270) at /build/buildd/gtk+3.0-3.5.16/./gtk/gtkwidget.c:6427
 gtk_widget_reparent_fixup_child (widget=0x79a270, client_data=0x77a820) at /build/buildd/gtk+3.0-3.5.16/./gtk/gtkwidget.c:6411
 gtk_widget_is_composited (widget=<optimized out>) at /build/buildd/gtk+3.0-3.5.16/./gtk/gtkwidget.c:8403
 g_closure_add_finalize_notifier (closure=0x7fd520751f8c, notify_data=0xf, notify_func=0x77a7e0) at /build/buildd/glib2.0-2.33.12/./gobject/gclosure.c:432
 ?? ()