GLib-GObject-CRITICAL on Rhythymbox

[Florian107]

flo@flo-mobile:~$ rhythmbox

(rhythmbox:14225): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed
** Message: pygobject_register_sinkfunc is deprecated (GstObject)

(rhythmbox:14225): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed

(rhythmbox:14225): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed
^C

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: libgstreamer0.10-0 0.10.30-1build2
ProcVersionSignature: Ubuntu 2.6.35-28.50-generic 2.6.35.11
Uname: Linux 2.6.35-28-generic i686
Architecture: i386
Date: Sun May 22 13:29:45 2011
ExecutablePath: /usr/bin/rhythmbox
InstallationMedia: Ubuntu-Netbook 10.10 "Maverick Meerkat" - Release i386 (20101007)
ProcEnviron:
 LANGUAGE=en_GB:en
 LANG=en_GB.utf8
 SHELL=/bin/bash
SourcePackage: gstreamer0.10