gnome-control-center crashed with SIGSEGV in g_object_unref()

[Colan Schwartz]

I simply clicked to sound icon -> "Sound Settings...".

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: deja-dup 20.0-0ubuntu3
ProcVersionSignature: Ubuntu 3.0.0-12.19-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu2
Architecture: amd64
CrashCounter: 1
Date: Fri Oct 7 14:16:40 2011
ExecutablePath: /usr/bin/gnome-control-center
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427.1)
ProcCmdline: gnome-control-center sound
ProcEnviron:
 SHELL=/bin/zsh
 PATH=(custom, no user)
 LANG=en_CA.UTF-8
SegvAnalysis:
 Segfault happened at: 0x7f6fc00f9b70: mov (%rdi),%rax
 PC (0x7f6fc00f9b70) ok
 source "(%rdi)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%rax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: deja-dup
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 g_object_unref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 deja_dup_initialize () from /usr/lib/control-center-1/panels/libdeja-dup.so
 deja_dup_gui_initialize () from /usr/lib/control-center-1/panels/libdeja-dup.so
Title: gnome-control-center crashed with SIGSEGV in g_object_unref()
UpgradeStatus: Upgraded to oneiric on 2011-10-02 (5 days ago)
UserGroups: adm admin cdrom dialout dip fax floppy fuse logcheck lp lpadmin mail netdev plugdev powerdev sambashare tape vboxusers video

[Apport retracing service (apport)]

StacktraceTop:
 g_settings_backend_unsubscribe (backend=0x0, name=0x0) at /build/buildd/glib2.0-2.30.0/./gio/gsettingsbackend.c:859
 g_settings_finalize (object=0x7f6fc3ba7550) at /build/buildd/glib2.0-2.30.0/./gio/gsettings.c:555
 g_object_unref (_object=0x7f6fc3ba7550) at /build/buildd/glib2.0-2.30.0/./gobject/gobject.c:2746
 deja_dup_initialize (header=0x7fff381d8120, msg=0x7fff381d8128) at CommonUtils.c:1326
 deja_dup_gui_initialize (parent=0x0, show_error=0) at WidgetUtils.c:291

[Launchpad Janitor (janitor)]

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

[quequotion (quequotion)]

What is this bug?

Apport brought it up but I have been dealing with a lot of other bugs today so I didn't notice this.