Comment 2 for bug 962808

StacktraceTop:
 cairo_surface_set_user_data (surface=0x0, key=0x7f7dd7b86d18, user_data=0x1d2d700, destroy=0x7f7dd66e91b0 <gdk_rgba_free>) at /build/buildd/cairo-1.10.2/src/cairo-surface.c:794
 gnome_bg_create_surface (bg=<optimized out>, window=0x1d35480, width=1366, height=768, is_root=1) at gnome-bg.c:1124
 nautilus_desktop_background_ensure_realized (self=0x17d46d0) at nautilus-desktop-background.c:240
 nautilus_desktop_background_set_up_widget (self=0x17d46d0) at nautilus-desktop-background.c:305
 g_closure_invoke (closure=0x1d38330, return_value=0x0, n_param_values=1, param_values=0x7ffff21f27d0, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.31.22/./gobject/gclosure.c:777