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Thread 1 (Thread 1675):
#0  0x00007f1fda6640c4 in ?? () from /usr/lib/libgnome-desktop-2.so.17
No symbol table info available.
#1  0x00007f1fda66756e in gnome_bg_draw ()
   from /usr/lib/libgnome-desktop-2.so.17
No symbol table info available.
#2  0x00007f1fda66775d in gnome_bg_create_pixmap ()
   from /usr/lib/libgnome-desktop-2.so.17
No symbol table info available.
#3  0x00007f1fd60986f1 in ?? ()
   from /usr/lib/gnome-settings-daemon-2.0/libbackground.so
No symbol table info available.
#4  0x00007f1fe217b19e in g_closure_invoke ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#5  0x00007f1fe2190448 in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#6  0x00007f1fe2191ad6 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#7  0x00007f1fe2191e28 in g_signal_emit_by_name ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#8  0x00007f1fe14b3b8e in ?? () from /usr/lib/libgdk-x11-2.0.so.0
No symbol table info available.
#9  0x00007f1fe14a5f60 in ?? () from /usr/lib/libgdk-x11-2.0.so.0
No symbol table info available.
#10 0x00007f1fe14a6938 in ?? () from /usr/lib/libgdk-x11-2.0.so.0
No symbol table info available.
#11 0x00007f1fe14a6e6e in ?? () from /usr/lib/libgdk-x11-2.0.so.0
No symbol table info available.
#12 0x00007f1fe1cd6ef0 in g_main_context_dispatch ()
   from /lib/libglib-2.0.so.0
No symbol table info available.
#13 0x00007f1fe1cdad28 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#14 0x00007f1fe1cdb26d in g_main_loop_run () from /lib/libglib-2.0.so.0
No symbol table info available.
#15 0x00007f1fe2fcb677 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#16 0x0000000000404a8a in main ()
No symbol table info available.