.
Thread 1 (process 6816):
#0  __strcmp_ssse3 () at ../sysdeps/x86_64/multiarch/../strcmp.S:99
No locals.
#1  0x000000000041a42a in theme_selection_changed_cb (
    icon_view=<value optimized out>, data=0x1c98b00)
    at appearance-themes.c:822
	model = <value optimized out>
	iter = {stamp = 2126480599, user_data = 0x1d9eea0, 
  user_data2 = 0x1da3b38, user_data3 = 0x0}
	name = (gchar *) 0x1fcae30 "Ambiance"
	selection = <value optimized out>
	theme = (GnomeThemeMetaInfo *) 0x1d53960
	is_custom = 0
#2  0x00007f5a939935de in g_closure_invoke ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#3  0x00007f5a939a7598 in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#4  0x00007f5a939a8a76 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#5  0x00007f5a939a9033 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#6  0x00007f5a948e2422 in gtk_icon_view_button_press (widget=0x1c30070, 
    event=0x1f976b0) at /build/buildd/gtk+2.0-2.20.0/gtk/gtkiconview.c:2254
	item = (GtkIconViewItem *) 0x1da3d10
	info = (GtkIconViewCellInfo *) 0x1db9d80
	dirty = 1
	mode = GTK_CELL_RENDERER_MODE_INERT
	cursor_cell = <value optimized out>
#7  0x00007f5a9490b0b8 in _gtk_marshal_BOOLEAN__BOXED (closure=0x1b74590, 
    return_value=0x7fffce3093b0, n_param_values=<value optimized out>, 
    param_values=0x1e71520, invocation_hint=<value optimized out>, 
    marshal_data=0x7f5a948e2370)
    at /build/buildd/gtk+2.0-2.20.0/gtk/gtkmarshalers.c:84
	data1 = (gpointer) 0x1c30070
	data2 = (gpointer) 0x1
	v_return = <value optimized out>
	__PRETTY_FUNCTION__ = "_gtk_marshal_BOOLEAN__BOXED"
#8  0x00007f5a939935de in g_closure_invoke ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#9  0x00007f5a939a71dd in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#10 0x00007f5a939a88b9 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#11 0x00007f5a939a9033 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#12 0x00007f5a94a21eaf in gtk_widget_event_internal (widget=0x1c30070, 
    event=0x1f976b0) at /build/buildd/gtk+2.0-2.20.0/gtk/gtkwidget.c:4951
	signal_num = <value optimized out>
	return_val = 0
#13 0x00007f5a94903583 in IA__gtk_propagate_event (widget=0x1c30070, 
    event=0x1f976b0) at /build/buildd/gtk+2.0-2.20.0/gtk/gtkmain.c:2447
	tmp = (GtkWidget *) 0x0
	handled_event = 29556848
	__PRETTY_FUNCTION__ = "IA__gtk_propagate_event"
#14 0x00007f5a9490465b in IA__gtk_main_do_event (event=0x1f976b0)
    at /build/buildd/gtk+2.0-2.20.0/gtk/gtkmain.c:1647
	event_widget = (GtkWidget *) 0x1c30070
	grab_widget = (GtkWidget *) 0x1c30070
	window_group = (GtkWindowGroup *) 0x1d6a620
	rewritten_event = (GdkEvent *) 0x0
	tmp_list = <value optimized out>
	__PRETTY_FUNCTION__ = "IA__gtk_main_do_event"
#15 0x00007f5a945787fc in gdk_event_dispatch (source=<value optimized out>, 
    callback=<value optimized out>, user_data=<value optimized out>)
    at /build/buildd/gtk+2.0-2.20.0/gdk/x11/gdkevents-x11.c:2372
	display = <value optimized out>
	event = <value optimized out>
#16 0x00007f5a932de8c2 in g_main_context_dispatch ()
   from /lib/libglib-2.0.so.0
No symbol table info available.
#17 0x00007f5a932e2748 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#18 0x00007f5a932e2c55 in g_main_loop_run () from /lib/libglib-2.0.so.0
No symbol table info available.
#19 0x00007f5a94904af7 in IA__gtk_main ()
    at /build/buildd/gtk+2.0-2.20.0/gtk/gtkmain.c:1219
	tmp_list = (GList *) 0x1c98b00
	functions = (GList *) 0x0
	init = (GtkInitFunction *) 0x1b1c520
	loop = <value optimized out>
#20 0x0000000000418786 in main (argc=1, argv=0x7fffce309ad8)
    at appearance-main.c:249
	w = <value optimized out>
	install_filename = (gchar *) 0x0
	start_page = (gchar *) 0x0
	wallpaper_files = (gchar **) 0x0
	option_context = <value optimized out>
	option_entries = {{long_name = 0x42e618 "install-theme", 
    short_name = 105 'i', flags = 2, arg = G_OPTION_ARG_FILENAME, 
    arg_data = 0x7fffce3099c8, 
    description = 0x42e708 "Specify the filename of a theme to install", 
    arg_description = 0x42e626 "filename"}, {
    long_name = 0x42e62f "show-page", short_name = 112 'p', flags = 2, 
    arg = G_OPTION_ARG_STRING, arg_data = 0x7fffce3099c0, 
    description = 0x42e738 "Specify the name of the page to show (theme|background|fonts|interface)", arg_description = 0x42e634 "page"}, {
    long_name = 0x42fdac "", short_name = 0 '\0', flags = 2, 
    arg = G_OPTION_ARG_FILENAME_ARRAY, arg_data = 0x7fffce3099b8, 
    description = 0x0, arg_description = 0x42e639 "[WALLPAPER...]"}, {
    long_name = 0x0, short_name = 0 '\0', flags = 0, arg = G_OPTION_ARG_NONE, 
    arg_data = 0x0, description = 0x0, arg_description = 0x0}}
	wm = (gchar *) 0x1b1c520 "`\027�\001"