Filed in Launchpad:

#0  bus_matchmaker_get_recipients (matchmaker=0xb9ffd360, 
    connections=0xb9ff9dc8, sender=0xba0ba2d0, addressed_recipient=0x0, 
    message=0xba0d1af0, recipients_p=0xbfc401b8) at signals.c:1347
	rule = (BusMatchRule *) 0x7ffffff7
	link = (DBusList *) 0xba00e634
#1  0xb80090d7 in bus_dispatch_matches (transaction=0xba0345b0, 
    sender=0xba0ba2d0, addressed_recipient=0x0, message=0xba0d1af0, 
    error=0xbfc4022c) at dispatch.c:96
	tmp_error = {name = 0x0, message = 0x0, dummy1 = 1, dummy2 = 0, 
  dummy3 = 0, dummy4 = 0, dummy5 = 1, padding1 = 0x0}
	connections = (BusConnections *) 0xb9ff9dc8
	recipients = (DBusList *) 0x0
	matchmaker = (BusMatchmaker *) 0xba00e634
	link = <value optimized out>
	context = (BusContext *) 0xb9ff7518
#2  0xb800947a in bus_dispatch_message_filter (connection=0xba0ba2d0, 
    message=0xba0d1af0, user_data=0x0) at dispatch.c:311
No locals.
#3  0xb8015c05 in dbus_connection_dispatch (connection=0xba0ba2d0)
    at dbus-connection.c:4406
	filter = (DBusMessageFilter *) 0x7ffffff7
	next = (DBusList *) 0x0
	message = (DBusMessage *) 0xba0d1af0
	link = <value optimized out>
	filter_list_copy = (DBusList *) 0xba164db8
	message_link = (DBusList *) 0xba178c3c
	result = DBUS_HANDLER_RESULT_NOT_YET_HANDLED
	status = <value optimized out>
	__FUNCTION__ = "dbus_connection_dispatch"
#4  0xb802c9c0 in _dbus_loop_dispatch (loop=0xb9ff7478) at dbus-mainloop.c:482
	status = 3120621108
	connection = (DBusConnection *) 0xba0ba2d0
#5  0xb802cd90 in _dbus_loop_iterate (loop=0xb9ff7478, block=1)
    at dbus-mainloop.c:848
	retval = 1
	fds = (DBusPollFD *) 0xba0b36e0
	stack_fds = {{fd = 3, events = 1, revents = 1}, {fd = 5, events = 1, 
    revents = 0}, {fd = 7, events = 1, revents = 0}, {fd = 10, events = 1, 
    revents = 0}, {fd = 12, events = 1, revents = 0}, {fd = 11, events = 1, 
    revents = 0}, {fd = 13, events = 1, revents = 0}, {fd = 15, events = 1, 
    revents = 0}, {fd = 14, events = 1, revents = 0}, {fd = 16, events = 1, 
    revents = 0}, {fd = 17, events = 1, revents = 0}, {fd = 19, events = 1, 
    revents = 0}, {fd = 18, events = 1, revents = 0}, {fd = 20, events = 1, 
    revents = 0}, {fd = 21, events = 1, revents = 0}, {fd = 22, events = 1, 
    revents = 0}, {fd = 23, events = 1, revents = 0}, {fd = 24, events = 1, 
    revents = 0}, {fd = 25, events = 1, revents = 0}, {fd = 26, events = 1, 
    revents = 0}, {fd = 27, events = 1, revents = 0}, {fd = 28, events = 1, 
    revents = 0}, {fd = 29, events = 1, revents = 0}, {fd = 30, events = 1, 
    revents = 0}, {fd = 31, events = 1, revents = 0}, {fd = 32, events = 1, 
    revents = 0}, {fd = 34, events = 1, revents = 0}, {fd = 35, events = 1, 
    revents = 0}, {fd = 33, events = 1, revents = 0}, {fd = 36, events = 1, 
    revents = 0}, {fd = 37, events = 1, revents = 0}, {fd = 38, events = 1, 
    revents = 0}, {fd = 39, events = 1, revents = 0}, {fd = -1077672736, 
    events = 1236, revents = -16444}, {fd = -1077672824, events = 19640, 
    revents = -18434}, {fd = -1209953250, events = 1312, revents = -16444}, {
    fd = -1207986576, events = -18735, revents = -18433}, {fd = -1208469248, 
    events = 0, revents = 0}, {fd = 0, events = -18725, revents = -18433}, {
    fd = -1208470940, events = -28684, revents = -18433}, {fd = -1208469296, 
    events = 4, revents = 0}, {fd = -1077672700, events = 20653, 
    revents = -18434}, {fd = -1208585872, events = 32, revents = 0}, {
    fd = -1207882768, events = 0, revents = 0}, {fd = -1208585920, 
    events = 0, revents = 0}, {fd = 0, events = 0, 
    revents = 0} <repeats 15 times>, {fd = 0, events = -12, 
    revents = -18441}, {fd = -1077672340, events = 1508, revents = -16444}, {
    fd = -1077672632, events = -30845, revents = -18441}, {fd = 15, 
    events = 1376, revents = -16444}}
	n_fds = 105
	watches_for_fds = (WatchCallback **) 0xba0c0d00
	stack_watches_for_fds = {0xb9ffc390, 0xb9ff83e8, 0xb9ffae70, 
  0xb9ff8628, 0xb9ff7698, 0xba000700, 0xba002430, 0xba004940, 0xba0069f0, 
  0xba0084a8, 0xba00a170, 0xba00e880, 0xba00e438, 0xba00b5b0, 0xba012260, 
  0xba0139b0, 0xba013f90, 0xba0181c0, 0xba019e90, 0xba01bbb8, 0xba01d570, 
  0xba0209f0, 0xba0230a8, 0xba0250a8, 0xba025fb0, 0xba027c28, 0xba029ce8, 
  0xba02be38, 0xba02b818, 0xba02e9d0, 0xba030e88, 0xba032a38, 0xba034660, 
  0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb9ffa618, 
  0x0 <repeats 21 times>}
	i = 105
	link = <value optimized out>
	n_ready = 2
	initial_serial = 2303
	timeout = 267122
	oom_watch_pending = 0
	orig_depth = 1
#6  0xb802d158 in _dbus_loop_run (loop=0xb9ff7478) at dbus-mainloop.c:874
	our_exit_depth = 0
#7  0xb8012467 in main (argc=7, argv=0xbfc40814) at main.c:473
	error = {name = 0x0, message = 0x0, dummy1 = 1, dummy2 = 0, 
  dummy3 = 1, dummy4 = 0, dummy5 = 1, padding1 = 0xb8038b00}
	config_file = {dummy1 = 0xb9ff7450, dummy2 = 24, dummy3 = 32, 
  dummy4 = 2147483639, dummy5 = 0, dummy6 = 0, dummy7 = 1, dummy8 = 0}
	addr_fd = {dummy1 = 0xb9ff73f8, dummy2 = 1, dummy3 = 16, 
  dummy4 = 2147483639, dummy5 = 0, dummy6 = 0, dummy7 = 1, dummy8 = 0}
	pid_fd = {dummy1 = 0xb9ff7190, dummy2 = 1, dummy3 = 16, 
  dummy4 = 2147483639, dummy5 = 0, dummy6 = 0, dummy7 = 1, dummy8 = 0}
	prev_arg = 0xbfc40d42 "--session"
	print_addr_pipe = {fd_or_handle = -1}
	print_pid_pipe = {fd_or_handle = -1}
	i = 7
	print_address = 1
	print_pid = 1
	force_fork = 1