#0  0xb78d55c8 in g_type_check_instance_cast ()
   from /usr/lib/libgobject-2.0.so.0
#1  0x0804ca31 in ?? ()
#2  0xb78c38dc in g_cclosure_marshal_VOID__OBJECT ()
   from /usr/lib/libgobject-2.0.so.0
#3  0xb78b6c4b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#4  0xb78cd095 in ?? () from /usr/lib/libgobject-2.0.so.0
#5  0xb78ce7ac in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#6  0xb78cec26 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#7  0xb7ce615d in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#8  0xb7ce6781 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#9  0xb7cea7ec in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#10 0xb7cf573d in gtk_widget_unparent () from /usr/lib/libgtk-x11-2.0.so.0
#11 0xb7b11a93 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#12 0xb78c38dc in g_cclosure_marshal_VOID__OBJECT ()
   from /usr/lib/libgobject-2.0.so.0
#13 0xb78b53c9 in ?? () from /usr/lib/libgobject-2.0.so.0
#14 0xb78b6c4b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#15 0xb78cc8ee in ?? () from /usr/lib/libgobject-2.0.so.0
#16 0xb78ce7ac in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#17 0xb78cec26 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#18 0xb7b48536 in gtk_container_remove () from /usr/lib/libgtk-x11-2.0.so.0
#19 0xb7cf017d in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#20 0xb78b925f in g_object_run_dispose () from /usr/lib/libgobject-2.0.so.0
#21 0xb7bf45be in gtk_object_destroy () from /usr/lib/libgtk-x11-2.0.so.0
#22 0xb7b1186d in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#23 0xb7b47b36 in gtk_container_foreach () from /usr/lib/libgtk-x11-2.0.so.0
#24 0xb7b48408 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#25 0xb7d00ea3 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#26 0xb78c43d4 in g_cclosure_marshal_VOID__VOID ()
   from /usr/lib/libgobject-2.0.so.0
#27 0xb78b53c9 in ?? () from /usr/lib/libgobject-2.0.so.0
#28 0xb78b6c4b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#29 0xb78cd498 in ?? () from /usr/lib/libgobject-2.0.so.0
#30 0xb78ce7ac in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#31 0xb78cec26 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#32 0xb7bf48c1 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#33 0xb7cf01a1 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#34 0xb7cfdb36 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#35 0xb78b925f in g_object_run_dispose () from /usr/lib/libgobject-2.0.so.0
#36 0xb7bf45be in gtk_object_destroy () from /usr/lib/libgtk-x11-2.0.so.0
#37 0xb7f137b9 in ?? () from /usr/lib/libxfce4panel.so.1
#38 0xb7bd1036 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#39 0xb78b6c4b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#40 0xb78cd095 in ?? () from /usr/lib/libgobject-2.0.so.0
#41 0xb78ce62b in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#42 0xb78cec26 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#43 0xb7ce633e in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#44 0xb7bcafe7 in gtk_main_do_event () from /usr/lib/libgtk-x11-2.0.so.0
#45 0xb7a5150a in ?? () from /usr/lib/libgdk-x11-2.0.so.0
#46 0xb78296f8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#47 0xb782cda3 in ?? () from /usr/lib/libglib-2.0.so.0
#48 0xb782d2c2 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#49 0xb7bcb3a9 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#50 0x0804c40f in ?? ()
#51 0xb768e685 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#52 0x0804c2e1 in ?? ()