MediaPlayer critical messages

For some reason, the MediaPlayer randomly emits critical messages when playing. This seems only to happen when in loop mode.

src/tests$ ./test_player file:///usr/share/sounds/gnome/default/alerts/drip.ogg
** (<unknown>:8283): DEBUG: State changed to PLAYING [2], data is 'test data'

(<unknown>:8283): GLib-GObject-CRITICAL **: g_object_ref: assertion `object->ref_count > 0' failed

(<unknown>:8283): GLib-GObject-CRITICAL **: g_object_ref: assertion `object->ref_count > 0' failed

(<unknown>:8283): GStreamer-CRITICAL **: gst_object_unref: assertion `((GObject *) object)->ref_count > 0' failed

Backtrace with G_DEBUG=fatal_warnings:

GLib-GObject-CRITICAL **: g_object_ref: assertion `object->ref_count > 0' failed
aborting...

Program received signal SIGABRT, Aborted.
[Switching to Thread 0xb64fdb70 (LWP 8412)]
0x0096b422 in __kernel_vsyscall ()
(gdb) bt
#0 0x0096b422 in __kernel_vsyscall ()
#1 0x005544d1 in raise () from /lib/tls/i686/cmov/libc.so.6
#2 0x00557932 in abort () from /lib/tls/i686/cmov/libc.so.6
#3 0x00153046 in g_logv () from /lib/libglib-2.0.so.0
#4 0x00153076 in g_log () from /lib/libglib-2.0.so.0
#5 0x001532db in g_return_if_fail_warning () from /lib/libglib-2.0.so.0
#6 0x0036535b in g_object_ref () from /usr/lib/libgobject-2.0.so.0
#7 0x00367668 in ?? () from /usr/lib/libgobject-2.0.so.0
#8 0x004dbff3 in gst_structure_id_set_valist () from /usr/lib/libgstreamer-0.10.so.0
#9 0x004dc133 in gst_structure_id_new () from /usr/lib/libgstreamer-0.10.so.0
#10 0x004b8200 in gst_message_new_stream_status () from /usr/lib/libgstreamer-0.10.so.0
#11 0x006f802a in ?? () from /usr/lib/gstreamer-0.10/libgstpulse.so
#12 0x0074062f in ?? () from /usr/lib/libpulse.so.0
#13 0x007437b6 in pa_mainloop_dispatch () from /usr/lib/libpulse.so.0
#14 0x00743c31 in pa_mainloop_iterate () from /usr/lib/libpulse.so.0
#15 0x00743cf4 in pa_mainloop_run () from /usr/lib/libpulse.so.0
#16 0x00754bc3 in ?? () from /usr/lib/libpulse.so.0
#17 0x007a1ac2 in ?? () from /usr/lib/libpulsecommon-0.9.19.so
#18 0x001cc80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#19 0x005f67ee in clone () from /lib/tls/i686/cmov/libc.so.6

This might be a GStreamer or pulseaudio bug...