Comment 5 for bug 122637

From by backtrace (bug 122909) I see:

(gdb) bt
#0 IA__g_logv (log_domain=0x2ae47c213bd3 "Gdk", log_level=<value optimized out>, format=0x2ae47c230794 "%s", args1=0x7fff2fa06800)
    at /build/buildd/glib2.0-2.13.5/glib/gmessages.c:503
#1 0x00002ae47cdf6693 in IA__g_log (log_domain=0x2ae47d5f3960 "", log_level=10655920, format=0xa29490 "")
    at /build/buildd/glib2.0-2.13.5/glib/gmessages.c:517
#2 0x00002ae47c1fd1d9 in gdk_x_error (display=<value optimized out>, error=0x7fff2fa06980)
    at /build/buildd/gtk+2.0-2.11.4/gdk/x11/gdkmain-x11.c:641
#3 0x00002ae47c6ae8c6 in _XError (dpy=0x6284c0, rep=<value optimized out>) at ../../src/XlibInt.c:2907
#4 0x00002ae47c6b0379 in _XReply (dpy=0x6284c0, rep=0x7fff2fa06af0, extra=0, discard=0) at ../../src/XlibInt.c:1833
#5 0x00002ae47c69430d in XGetWindowProperty (dpy=0x6284c0, w=76, property=442, offset=0, length=9223372036854775807, delete=0,
    req_type=19, actual_type=0x7fff2fa06be8, actual_format=0x7fff2fa06c04, nitems=0x7fff2fa06be0, bytesafter=0x7fff2fa06bd8,
    prop=0x7fff2fa06bd0) at ../../src/GetProp.c:64
#6 0x0000000000403d5e in notify_daemon_notify_handler (daemon=0x631b70, app_name=<value optimized out>, id=0,
    icon=<value optimized out>, summary=<value optimized out>, body=<value optimized out>, actions=0x665700, hints=0x6f6580,
    timeout=-1, context=0xa1f720) at daemon.c:750
#7 0x0000000000404d35 in dbus_glib_marshal_notification_daemon_VOID__STRING_UINT_STRING_STRING_STRING_BOXED_BOXED_INT_POINTER (
    closure=0x7fff2fa06e80, return_value=<value optimized out>, n_param_values=<value optimized out>, param_values=0x6f0170,
    invocation_hint=<value optimized out>, marshal_data=0x403990) at notificationdaemon-dbus-glue.h:100
#8 0x00002ae47b2cc654 in ?? () from /usr/lib/libdbus-glib-1.so.2
#9 0x00002ae47b4fa019 in _dbus_object_tree_dispatch_and_unlock (tree=0x6477b0, message=0x649530) at dbus-object-tree.c:842
#10 0x00002ae47b4edfdb in dbus_connection_dispatch (connection=0x6479e0) at dbus-connection.c:4308
#11 0x00002ae47b2c9495 in ?? () from /usr/lib/libdbus-glib-1.so.2
#12 0x00002ae47cdedfd3 in IA__g_main_context_dispatch (context=0x63b520) at /build/buildd/glib2.0-2.13.5/glib/gmain.c:2061
#13 0x00002ae47cdf12dd in g_main_context_iterate (context=0x63b520, block=1, dispatch=1, self=<value optimized out>)
    at /build/buildd/glib2.0-2.13.5/glib/gmain.c:2694
#14 0x00002ae47cdf15ea in IA__g_main_loop_run (loop=0x64bcf0) at /build/buildd/glib2.0-2.13.5/glib/gmain.c:2898
#15 0x00002ae47bcf5743 in IA__gtk_main () at /build/buildd/gtk+2.0-2.11.4/gtk/gtkmain.c:1144
#16 0x0000000000404a3a in main (argc=1, argv=0x7fff2fa07408) at daemon.c:1122
#17 0x00002ae47d2bf8e4 in __libc_start_main () from /lib/libc.so.6
#18 0x0000000000403209 in _start ()
(gdb)

So glib is SIGTRAPping due to its settings due to what seems to be a X error.