Comment 5 for bug 975884

Gentoo Linux, lightdm 1.2.2-r1

Here is the bt:
========================

#0 __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:136
#1 0x000000349a00a511 in _L_lock_997 () from /lib64/libpthread.so.0
#2 0x000000349a00a32a in __pthread_mutex_lock (mutex=0x1659f10) at pthread_mutex_lock.c:61
#3 0x0000003d3bcb3ea0 in g_dbus_connection_signal_unsubscribe (connection=0x1662830, subscription_id=20) at gdbusconnection.c:3534
#4 0x0000003d3bcbe511 in g_dbus_proxy_finalize (object=0x16924d0) at gdbusproxy.c:218
#5 0x0000003d3ae13168 in g_object_unref (_object=0x16924d0) at gobject.c:2746
#6 0x0000000000406f9e in user_dispose (object=0x1660d90) at accounts.c:421
#7 0x0000003d3ae130ea in g_object_unref (_object=0x1660d90) at gobject.c:2709
#8 0x00000000004132f1 in session_finalize (object=0x168bad0) at session.c:600
#9 0x0000003d3ae13168 in g_object_unref (_object=0x168bad0) at gobject.c:2746
#10 0x000000000040bce7 in greeter_finalize (object=0x167b240) at greeter.c:694
#11 0x0000003d3ae13168 in g_object_unref (_object=0x167b240) at gobject.c:2746
#12 0x0000000000408beb in display_finalize (object=0x166e6e0) at display.c:932
#13 0x0000003d3ae13168 in g_object_unref (_object=0x166e6e0) at gobject.c:2746
#14 0x00000000004109f9 in seat_finalize (object=0x1661b00) at seat.c:666
#15 0x0000003d3ae13168 in g_object_unref (_object=0x1661b00) at gobject.c:2746
#16 0x0000003d3bcac4b7 in exported_interface_free (ei=0x167f880) at gdbusconnection.c:3880
#17 0x0000003d3a2355bc in g_hash_table_remove_internal (hash_table=0x1681640, key=0x167fb40, notify=1) at ghash.c:1200
#18 0x0000003d3bcb434e in g_dbus_connection_unregister_object (connection=0x1662830, registration_id=<optimized out>) at gdbusconnection.c:4996
#19 0x000000000040d6f7 in bus_entry_free (data=0x167db20) at lightdm.c:513
#20 0x0000003d3a235183 in g_hash_table_remove_all_nodes (hash_table=0x1681580, notify=<optimized out>) at ghash.c:513
#21 0x0000003d3a235b6a in g_hash_table_unref (hash_table=0x1681580) at ghash.c:997
#22 0x000000000040c917 in exit_cb (data=<optimized out>) at lightdm.c:152
#23 0x0000003d3a247672 in g_main_dispatch (context=0x1659c40) at gmain.c:2441
#24 g_main_context_dispatch (context=0x1659c40) at gmain.c:3011
#25 0x0000003d3a247e68 in g_main_context_iterate (context=0x1659c40, block=1, dispatch=1, self=<optimized out>) at gmain.c:3089
#26 0x0000003d3a2483ba in g_main_loop_run (loop=0x1659d30) at gmain.c:3297
#27 0x000000000040e372 in main (argc=1, argv=0x7fff108cb7d8) at lightdm.c:1207