Happens on fedora 17 with 

telepathy-idle-0.1.11-2.fc17.x86_64
empathy-3.4.0-1.fc17.x86_64

Thread 1 (Thread 0x7f757ffb1800 (LWP 1646)):
#0  0x000000000040a11b in _send_with_max_priority_ready (source_object=<optimized out>, res=0xf2ee70, user_data=0xf3e980) at idle-connection.c:933
        sconn = 0xf21840 [IdleServerConnection]
        data = 0xf3e980
        conn = 0xf1b020 [IdleConnection]
        msg = 0xf322c0 "QUIT\r\n"
        priority = 4294967295
        error = 0x0
        __PRETTY_FUNCTION__ = "_send_with_max_priority_ready"
#1  0x00000036fe86ce17 in g_simple_async_result_complete (simple=0xf2ee70 [GSimpleAsyncResult]) at gsimpleasyncresult.c:767
        current_source = 0xf49490
        current_context = 0x0
        __PRETTY_FUNCTION__ = "g_simple_async_result_complete"
#2  0x00000036fe86cf19 in complete_in_idle_cb (data=<optimized out>) at gsimpleasyncresult.c:779
        simple = <optimized out>
#3  0x00000036fd8475bc in g_main_dispatch (context=0xf0c5a0) at gmain.c:2515
        dispatch = 0x36fd845310 <g_idle_dispatch>
        was_in_call = 0
        user_data = 0xf2ee70
        callback = 0x36fe86cf10 <complete_in_idle_cb>
        cb_funcs = 0x36fdb1e960
        cb_data = 0xf5dc80
        current_source_link = {data = 0xf49490, next = 0x0}
        need_destroy = <optimized out>
        source = 0xf49490
        current = 0xf02660
        i = <optimized out>
#4  g_main_context_dispatch (context=context@entry=0xf0c5a0) at gmain.c:3052
No locals.
#5  0x00000036fd8479d8 in g_main_context_iterate (context=0xf0c5a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at gmain.c:3123
        max_priority = 0
        timeout = 0
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = <optimized out>
        fds = 0xf19680
#6  0x00000036fd847dd2 in g_main_loop_run (loop=0xf0dc80) at gmain.c:3317
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#7  0x00000037089525e2 in tp_run_connection_manager (prog_name=prog_name@entry=0x418c84 "telepathy-idle", version=version@entry=0x418c7d "0.1.11", construct_cm=construct_cm@entry=0x408990 <_construct_cm>, argc=argc@entry=1, argv=argv@entry=0x7fffa2a6fca8) at run.c:285
        connection = 0xf09730
        bus_daemon = 0xf0e090 [TpDBusDaemon]
        error = 0x0
        ret = 1
        __PRETTY_FUNCTION__ = "tp_run_connection_manager"
#8  0x0000000000408878 in main (argc=1, argv=0x7fffa2a6fca8) at idle.c:47
        debug_sender = 0xf05260 [TpDebugSender]
        result = <optimized out>