.
Thread 1 (process 14229):
#0  0x00007fa81adecf50 in _XReply (dpy=0x1e2c210, rep=0x7fff25eb5bc0, 
    extra=0, discard=0) at ../../src/xcb_io.c:417
	error = <value optimized out>
	c = (xcb_connection_t *) 0x1e2cc50
	__PRETTY_FUNCTION__ = "_XReply"
#1  0x00007fa81adca246 in XGetWindowProperty (dpy=0x1e2c210, w=18874371, 
    property=67, offset=0, length=8192, delete=0, req_type=31, 
    actual_type=0x7fff25eb5c78, actual_format=0x7fff25eb5c84, 
    nitems=0x7fff25eb5c70, bytesafter=0x7fff25eb5c68, prop=0x7fff25eb5c60)
    at ../../src/GetProp.c:64
	reply = {type = 1 '\001', format = 8 '\b', sequenceNumber = 5299, 
  length = 5, propertyType = 8, bytesAfter = 0, nItems = 457275904, 
  pad1 = 32680, pad2 = 457275904, pad3 = 32680}
	error = {type = 0 '\0', errorCode = 0 '\0', sequenceNumber = 5300, 
  resourceID = 0, minorCode = 0, majorCode = 0 '\0', pad1 = 0 '\0', 
  pad3 = 32680, pad4 = 31637744, pad5 = 0, pad6 = 457275904, pad7 = 32680}
#2  0x00007fa81adc8fb1 in XGetClassHint (dpy=0x1e2c210, w=0, 
    classhint=0x7fff25eb5d10) at ../../src/GetHints.c:314
	len_name = <value optimized out>
	len_class = <value optimized out>
	actual_type = 31710944
	actual_format = <value optimized out>
	nitems = <value optimized out>
	leftover = 140733829569808
	data = (unsigned char *) 0x0
#3  0x0000000000414fb3 in defaults_get_top_corner (self=0x1e8c030, 
    x=0x7fff25eb5dc0, y=0x7fff25eb5dc4) at defaults.c:2092
	rect = {x = 32506432, y = 0, width = 32589520, height = 0}
	panel_rect = {x = 0, y = 0, width = 0, height = 0}
	screen = (GdkScreen *) 0x1e3e0d0
	active_window = <value optimized out>
	panel_window = <value optimized out>
	mx = <value optimized out>
	my = <value optimized out>
	monitor = <value optimized out>
	panel_monitor = <value optimized out>
	aw_monitor = <value optimized out>
	__PRETTY_FUNCTION__ = "defaults_get_top_corner"
#4  0x000000000041826c in stack_layout (self=0x1ecd4c0) at display.c:217
	bubble = (Bubble *) 0x1f00240
	d = <value optimized out>
	y = 0
	x = 0
	__PRETTY_FUNCTION__ = "stack_layout"
#5  0x0000000000418bf1 in stack_notify_handler (self=0x1ecd4c0, 
    app_name=0x1eba9c0 "Pidgin", id=<value optimized out>, 
    icon=0x420a36 "...", summary=0x1ea39f0 "Phoebe Fronista", 
    body=0x1ea3960 "is online", actions=0x1e4e820, hints=0x1f146d0, 
    timeout=-1, context=0x1ea4bd0) at stack.c:595
	bubble = (Bubble *) 0x1f00240
	data = (GValue *) 0x1f542f0
	compat = <value optimized out>
	pixbuf = <value optimized out>
	new_bubble = 1
	turn_into_dialog = <value optimized out>
#6  0x0000000000417c6c in dbus_glib_marshal_stack_VOID__STRING_UINT_STRING_STRING_STRING_BOXED_BOXED_INT_POINTER (closure=0x7fff25eb6200, 
    return_value=<value optimized out>, n_param_values=<value optimized out>, 
    param_values=0x1f0abb0, invocation_hint=<value optimized out>, 
    marshal_data=0x4187f0) at stack-glue.h:100
	data1 = (gpointer) 0x1ecd4c0
	data2 = <value optimized out>
	__PRETTY_FUNCTION__ = "dbus_glib_marshal_stack_VOID__STRING_UINT_STRING_STRING_STRING_BOXED_BOXED_INT_POINTER"
#7  0x00007fa81d64012b in gobject_message_function (connection=0x1e8d120, 
    message=0x1e8ee80, user_data=<value optimized out>) at dbus-gobject.c:1347
	pspec = <value optimized out>
	object = (GObject *) 0x1ecd4c0
	setter = <value optimized out>
	getter = <value optimized out>
	getall = <value optimized out>
	s = <value optimized out>
	wincaps_propname = <value optimized out>
	wincaps_propiface = <value optimized out>
	iter = {dummy1 = 0x1f64550, dummy2 = 0x24c8, dummy3 = 240, 
  dummy4 = 0, dummy5 = 32916832, dummy6 = 0, dummy7 = 9424, dummy8 = 0, 
  dummy9 = 454188471, dummy10 = 32680, dummy11 = 3692, pad1 = 32767, 
  pad2 = 457275904, pad3 = 0x1f4bf10}
	method = (const DBusGMethodInfo *) 0x420e80
	object_info = (const DBusGObjectInfo *) 0x420ca0
	ret = <value optimized out>
#8  0x00007fa81d412081 in _dbus_object_tree_dispatch_and_unlock (
    tree=0x1e8bde0, message=0x1e8ee80) at dbus-object-tree.c:856
	user_data = (void *) 0x1ecd4c0
	next = (DBusList *) 0x0
	path = (char **) 0x1e7ce60
	exact_match = 0
	list = (DBusList *) 0x1efe798
	link = <value optimized out>
	result = <value optimized out>
	subtree = <value optimized out>
#9  0x00007fa81d404966 in dbus_connection_dispatch (connection=0x1e8d120)
    at dbus-connection.c:4447
	message = (DBusMessage *) 0x1e8ee80
	link = <value optimized out>
	filter_list_copy = (DBusList *) 0x0
	message_link = (DBusList *) 0x1efe720
	result = DBUS_HANDLER_RESULT_NOT_YET_HANDLED
	status = DBUS_DISPATCH_DATA_REMAINS
	__FUNCTION__ = "dbus_connection_dispatch"
#10 0x00007fa81d63cb55 in message_queue_dispatch (
    source=<value optimized out>, callback=<value optimized out>, 
    user_data=<value optimized out>) at dbus-gmain.c:101
	connection = (DBusConnection *) 0x1e8d120
#11 0x00007fa81b6720ca in IA__g_main_context_dispatch (context=0x1e462f0)
    at /build/buildd/glib2.0-2.20.0/glib/gmain.c:1814
No locals.
#12 0x00007fa81b6757a0 in g_main_context_iterate (context=0x1e462f0, block=1, 
    dispatch=1, self=<value optimized out>)
    at /build/buildd/glib2.0-2.20.0/glib/gmain.c:2448
	max_priority = 0
	timeout = 0
	some_ready = 1
	nfds = 7
	allocated_nfds = <value optimized out>
	fds = (GPollFD *) 0x1efe160
	__PRETTY_FUNCTION__ = "g_main_context_iterate"
#13 0x00007fa81b675c6d in IA__g_main_loop_run (loop=0x1efe1a0)
    at /build/buildd/glib2.0-2.20.0/glib/gmain.c:2656
	self = (GThread *) 0x1e044d0
	__PRETTY_FUNCTION__ = "IA__g_main_loop_run"
#14 0x00007fa81cf309f7 in IA__gtk_main ()
    at /build/buildd/gtk+2.0-2.16.0/gtk/gtkmain.c:1205
	tmp_list = (GList *) 0x1ecd4c0
	functions = (GList *) 0x0
	init = (GtkInitFunction *) 0x1e8d128
	loop = <value optimized out>
#15 0x0000000000417470 in main (argc=1, argv=0x7fff25eb67e8) at main.c:77
	defaults = <value optimized out>
	stack = (Stack *) 0x1ecd4c0
	observer = <value optimized out>
	connection = <value optimized out>