I'm really confused Here it is. ~$ gnome-session-remove gnome-panel GTK Accessibility Module initialized (gnome-session-remove:11770): Gnome-WARNING **: Accessibility: failed to find mo dule 'libgail-gnome' which is needed to make this application accessible Removing 'gnome-panel' from the session (gnome-session-remove:11770): GLib-CRITICAL **: g_shell_parse_argv: assertion `c ommand_line != NULL' failed ^[[Aapplication finalize called famille@slamone:~$ gdb gnome-panel GNU gdb 6.4-debian Copyright 2005 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i486-linux-gnu"...Using host libthread_db library "/ lib/tls/i686/cmov/libthread_db.so.1". (gdb) run Starting program: /usr/bin/gnome-panel [Thread debugging using libthread_db enabled] [New Thread -1223821632 (LWP 11787)] GTK Accessibility Module initialized (gnome-panel:11787): Gnome-WARNING **: Accessibility: failed to find module 'lib gail-gnome' which is needed to make this application accessible [New Thread -1233409104 (LWP 11792)] Program received signal SIGSEGV, Segmentation fault. [Switching to Thread -1223821632 (LWP 11787)] 0xb7bbc882 in gtk_tree_model_filter_iter_n_children (model=0x81096a0, iter=0xbfcb5e8c) at gtktreemodelfilter.c:2115 2115 gtktreemodelfilter.c: Aucun fichier ou répertoire de ce type. in gtktreemodelfilter.c (gdb) GTK Accessibility Module initialized (gconf-editor:11808): Gnome-WARNING **: Accessibility: failed to find module 'li bgail-gnome' which is needed to make this application accessible thread apply all bt Thread 2 (Thread -1233409104 (LWP 11792)): #0 0xffffe410 in __kernel_vsyscall () #1 0xb768e8b4 in poll () from /lib/tls/i686/cmov/libc.so.6 #2 0xb780a6e8 in g_main_context_check () from /usr/lib/libglib-2.0.so.0 #3 0xb780abb8 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0 #4 0xb7d0e70e in link_thread_io_context () from /usr/lib/libORBit-2.so.0 #5 0xb7823472 in g_static_private_free () from /usr/lib/libglib-2.0.so.0 #6 0xb7cca341 in start_thread () from /lib/tls/i686/cmov/libpthread.so.0 #7 0xb76984de in clone () from /lib/tls/i686/cmov/libc.so.6 Thread 1 (Thread -1223821632 (LWP 11787)): #0 0xb7bbc882 in gtk_tree_model_filter_iter_n_children (model=0x81096a0, iter=0xbfcb5e8c) at gtktreemodelfilter.c:2115 #1 0xb7bb8c0d in IA__gtk_tree_model_iter_n_children (tree_model=0x81096a0, iter=0x0) at gtktreemodel.c:1183 #2 0xb6f7aa6b in gail_tree_view_new () from /usr/lib/gtk-2.0/modules/libgail.so #3 0xb6f7aaf9 in gail_tree_view_new () from /usr/lib/gtk-2.0/modules/libgail.so #4 0xb6f7b090 in gail_tree_view_ref_focus_cell () from /usr/lib/gtk-2.0/modules/libgail.so #5 0xb6f7b3ac in gail_tree_view_ref_focus_cell () ---Type to continue, or q to quit--- from /usr/lib/gtk-2.0/modules/libgail.so #6 0xb787d423 in g_cclosure_marshal_VOID__VOID () from /usr/lib/libgobject-2.0.so.0 #7 0xb787179f in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 #8 0xb78804de in g_signal_stop_emission () from /usr/lib/libgobject-2.0.so.0 #9 0xb7881ae9 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #10 0xb7881e59 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #11 0xb7bdc5c9 in IA__gtk_tree_view_remove_column (tree_view=0x83eb668, column=0x816b898) at gtktreeview.c:10000 #12 0xb7bde822 in gtk_tree_view_destroy (object=0x83eb668) at gtktreeview.c:1363 #13 0xb787d423 in g_cclosure_marshal_VOID__VOID () from /usr/lib/libgobject-2.0.so.0 #14 0xb787116f in g_cclosure_new_swap () from /usr/lib/libgobject-2.0.so.0 #15 0xb787179f in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 #16 0xb7880b2a in g_signal_stop_emission () from /usr/lib/libgobject-2.0.so.0 #17 0xb7881ae9 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #18 0xb7881e59 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #19 0xb7b2a112 in gtk_object_dispose (gobject=0x83eb668) at gtkobject.c:419 #20 0xb7bf561f in gtk_widget_dispose (object=0x83eb668) at gtkwidget.c:6653 #21 0xb78749f4 in g_object_run_dispose () from /usr/lib/libgobject-2.0.so.0 #22 0xb7b2a0ce in IA__gtk_object_destroy (object=0x83eb668) at gtkobject.c:404 #23 0xb7bee08e in IA__gtk_widget_destroy (widget=0x83eb668) at gtkwidget.c:1995 ---Type to continue, or q to quit--- #24 0xb7a478ab in gtk_bin_forall (container=0x83f7c18, include_internals=0, callback=0x1, callback_data=0x0) at gtkbin.c:166 #25 0xb7b4b1ee in gtk_scrolled_window_forall (container=0x83f7c18, include_internals=0, callback=0xb7bee04d , callback_data=0x0) at gtkscrolledwindow.c:816 #26 0xb7a83030 in IA__gtk_container_foreach (container=0x83f7c18, callback=0xb7bee04d , callback_data=0x0) at gtkcontainer.c:1292 #27 0xb7a84d55 in gtk_container_destroy (object=0x83f7c18) at gtkcontainer.c:829 #28 0xb7b4aeb0 in gtk_scrolled_window_destroy (object=0x83f7c18) at gtkscrolledwindow.c:675 #29 0xb787d423 in g_cclosure_marshal_VOID__VOID () from /usr/lib/libgobject-2.0.so.0 #30 0xb787116f in g_cclosure_new_swap () from /usr/lib/libgobject-2.0.so.0 #31 0xb787179f in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 #32 0xb7880b2a in g_signal_stop_emission () from /usr/lib/libgobject-2.0.so.0 #33 0xb7881ae9 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #34 0xb7881e59 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #35 0xb7b2a112 in gtk_object_dispose (gobject=0x83f7c18) at gtkobject.c:419 #36 0xb7bf561f in gtk_widget_dispose (object=0x83f7c18) at gtkwidget.c:6653 #37 0xb78749f4 in g_object_run_dispose () from /usr/lib/libgobject-2.0.so.0 #38 0xb7b2a0ce in IA__gtk_object_destroy (object=0x83f7c18) at gtkobject.c:404 ---Type to continue, or q to quit--- #39 0xb7bee08e in IA__gtk_widget_destroy (widget=0x83f7c18) at gtkwidget.c:1995 #40 0xb7a4afd8 in gtk_box_forall (container=0x848b450, include_internals=0, callback=0xb7bee04d , callback_data=0x0) at gtkbox.c:703 #41 0xb7a83030 in IA__gtk_container_foreach (container=0x848b450, callback=0xb7bee04d , callback_data=0x0) at gtkcontainer.c:1292 #42 0xb7a84d55 in gtk_container_destroy (object=0x848b450) at gtkcontainer.c:829 #43 0xb787d423 in g_cclosure_marshal_VOID__VOID () from /usr/lib/libgobject-2.0.so.0 #44 0xb787116f in g_cclosure_new_swap () from /usr/lib/libgobject-2.0.so.0 #45 0xb787179f in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 #46 0xb7880b2a in g_signal_stop_emission () from /usr/lib/libgobject-2.0.so.0 #47 0xb7881ae9 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #48 0xb7881e59 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #49 0xb7b2a112 in gtk_object_dispose (gobject=0x848b450) at gtkobject.c:419 #50 0xb7bf561f in gtk_widget_dispose (object=0x848b450) at gtkwidget.c:6653 #51 0xb78749f4 in g_object_run_dispose () from /usr/lib/libgobject-2.0.so.0 #52 0xb7b2a0ce in IA__gtk_object_destroy (object=0x848b450) at gtkobject.c:404 #53 0xb7bee08e in IA__gtk_widget_destroy (widget=0x848b450) at gtkwidget.c:1995 #54 0xb7aa9448 in gtk_expander_forall (container=0x0, include_internals=0, callback=0xb7bee04d , callback_data=0x0) ---Type to continue, or q to quit--- at gtkexpander.c:1174 #55 0xb7a83030 in IA__gtk_container_foreach (container=0x8459a78, callback=0xb7bee04d , callback_data=0x0) at gtkcontainer.c:1292 #56 0xb7a84d55 in gtk_container_destroy (object=0x8459a78) at gtkcontainer.c:829 #57 0xb7aa83f3 in gtk_expander_destroy (object=0x8459a78) at gtkexpander.c:379 #58 0xb787d423 in g_cclosure_marshal_VOID__VOID () from /usr/lib/libgobject-2.0.so.0 #59 0xb787116f in g_cclosure_new_swap () from /usr/lib/libgobject-2.0.so.0 #60 0xb787179f in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 #61 0xb7880b2a in g_signal_stop_emission () from /usr/lib/libgobject-2.0.so.0 #62 0xb7881ae9 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #63 0xb7881e59 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #64 0xb7b2a112 in gtk_object_dispose (gobject=0x8459a78) at gtkobject.c:419 #65 0xb7bf561f in gtk_widget_dispose (object=0x8459a78) at gtkwidget.c:6653 #66 0xb78749f4 in g_object_run_dispose () from /usr/lib/libgobject-2.0.so.0 #67 0xb7b2a0ce in IA__gtk_object_destroy (object=0x8459a78) at gtkobject.c:404 #68 0xb7bee08e in IA__gtk_widget_destroy (widget=0x8459a78) at gtkwidget.c:1995 #69 0xb7a4afd8 in gtk_box_forall (container=0x83f84f0, include_internals=0, callback=0xb7bee04d , callback_data=0x0) at gtkbox.c:703 #70 0xb7a83030 in IA__gtk_container_foreach (container=0x83f84f0, ---Type to continue, or q to quit--- callback=0xb7bee04d , callback_data=0x0) at gtkcontainer.c:1292 #71 0xb7a84d55 in gtk_container_destroy (object=0x83f84f0) at gtkcontainer.c:829 #72 0xb787d423 in g_cclosure_marshal_VOID__VOID () from /usr/lib/libgobject-2.0.so.0 #73 0xb787116f in g_cclosure_new_swap () from /usr/lib/libgobject-2.0.so.0 #74 0xb787179f in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 #75 0xb7880b2a in g_signal_stop_emission () from /usr/lib/libgobject-2.0.so.0 #76 0xb7881ae9 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #77 0xb7881e59 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #78 0xb7b2a112 in gtk_object_dispose (gobject=0x83f84f0) at gtkobject.c:419 #79 0xb7bf561f in gtk_widget_dispose (object=0x83f84f0) at gtkwidget.c:6653 #80 0xb78749f4 in g_object_run_dispose () from /usr/lib/libgobject-2.0.so.0 #81 0xb7b2a0ce in IA__gtk_object_destroy (object=0x83f84f0) at gtkobject.c:404 #82 0xb7bee08e in IA__gtk_widget_destroy (widget=0x83f84f0) at gtkwidget.c:1995 #83 0xb7a4afd8 in gtk_box_forall (container=0x8185238, include_internals=0, callback=0xb7bee04d , callback_data=0x0) at gtkbox.c:703 #84 0xb7a83030 in IA__gtk_container_foreach (container=0x8185238, callback=0xb7bee04d , callback_data=0x0) at gtkcontainer.c:1292 #85 0xb7a84d55 in gtk_container_destroy (object=0x8185238) ---Type to continue, or q to quit--- at gtkcontainer.c:829 #86 0xb787d423 in g_cclosure_marshal_VOID__VOID () from /usr/lib/libgobject-2.0.so.0 #87 0xb787116f in g_cclosure_new_swap () from /usr/lib/libgobject-2.0.so.0 #88 0xb787179f in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 #89 0xb7880b2a in g_signal_stop_emission () from /usr/lib/libgobject-2.0.so.0 #90 0xb7881ae9 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #91 0xb7881e59 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #92 0xb7b2a112 in gtk_object_dispose (gobject=0x8185238) at gtkobject.c:419 #93 0xb7bf561f in gtk_widget_dispose (object=0x8185238) at gtkwidget.c:6653 #94 0xb78749f4 in g_object_run_dispose () from /usr/lib/libgobject-2.0.so.0 #95 0xb7b2a0ce in IA__gtk_object_destroy (object=0x8185238) at gtkobject.c:404 #96 0xb7bee08e in IA__gtk_widget_destroy (widget=0x8185238) at gtkwidget.c:1995 #97 0xb7a478ab in gtk_bin_forall (container=0x83ee0c8, include_internals=0, callback=0x1, callback_data=0x0) at gtkbin.c:166 #98 0xb7a83030 in IA__gtk_container_foreach (container=0x83ee0c8, callback=0xb7bee04d , callback_data=0x0) at gtkcontainer.c:1292 #99 0xb7a84d55 in gtk_container_destroy (object=0x83ee0c8) at gtkcontainer.c:829 #100 0xb7c02f70 in gtk_window_destroy (object=0x83ee0c8) at gtkwindow.c:3828 #101 0xb787d423 in g_cclosure_marshal_VOID__VOID () from /usr/lib/libgobject-2.0.so.0 ---Type to continue, or q to quit--- #102 0xb787116f in g_cclosure_new_swap () from /usr/lib/libgobject-2.0.so.0 #103 0xb787179f in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 #104 0xb7880b2a in g_signal_stop_emission () from /usr/lib/libgobject-2.0.so.0 #105 0xb7881ae9 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #106 0xb7881e59 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #107 0xb7b2a112 in gtk_object_dispose (gobject=0x83ee0c8) at gtkobject.c:419 #108 0xb7bf561f in gtk_widget_dispose (object=0x83ee0c8) at gtkwidget.c:6653 #109 0xb7bfc4a2 in gtk_window_dispose (object=0x83ee0c8) at gtkwindow.c:1762 #110 0xb78749f4 in g_object_run_dispose () from /usr/lib/libgobject-2.0.so.0 #111 0xb7b2a0ce in IA__gtk_object_destroy (object=0x83ee0c8) at gtkobject.c:404 #112 0xb7bee08e in IA__gtk_widget_destroy (widget=0x83ee0c8) at gtkwidget.c:1995 #113 0x0807aa7e in panel_run_dialog_response (dialog=0x84970f8, response=-5, run_dialog=0x0) at /build/buildd/gnome-panel-2.14.0/./gnome-panel/panel-run-dialog.c:412 #114 0xb787d68b in g_cclosure_marshal_VOID () from /usr/lib/libgobject-2.0.so.0 #115 0xb787179f in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 #116 0xb78804de in g_signal_stop_emission () from /usr/lib/libgobject-2.0.so.0 #117 0xb7881ae9 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #118 0xb7881e59 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #119 0xb7a950ce in IA__gtk_dialog_response (dialog=0x83ee0c8, response_id=0) at gtkdialog.c:858 #120 0xb7a95123 in action_widget_activated (widget=0x0, dialog=0x83ee0c8) ---Type to continue, or q to quit--- at gtkdialog.c:557 #121 0xb787d423 in g_cclosure_marshal_VOID__VOID () from /usr/lib/libgobject-2.0.so.0 #122 0xb787179f in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 #123 0xb78804de in g_signal_stop_emission () from /usr/lib/libgobject-2.0.so.0 #124 0xb7881ae9 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #125 0xb7881e59 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #126 0xb7a4c49f in IA__gtk_button_clicked (button=0x8109630) at gtkbutton.c:845 #127 0xb7a4dcda in gtk_real_button_released (button=0x8109630) at gtkbutton.c:1380 #128 0xb787d423 in g_cclosure_marshal_VOID__VOID () from /usr/lib/libgobject-2.0.so.0 #129 0xb787116f in g_cclosure_new_swap () from /usr/lib/libgobject-2.0.so.0 #130 0xb787179f in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 #131 0xb78805ea in g_signal_stop_emission () from /usr/lib/libgobject-2.0.so.0 #132 0xb7881ae9 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #133 0xb7881e59 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #134 0xb7a4c41c in IA__gtk_button_released (button=0x8109630) at gtkbutton.c:837 #135 0xb7a4d38c in gtk_button_button_release (widget=0x0, event=0x848b948) at gtkbutton.c:1273 #136 0xb7b0d540 in _gtk_marshal_BOOLEAN__BOXED (closure=0x8116be8, return_value=0xbfcb9f30, n_param_values=2, param_values=0xbfcba02c, ---Type to continue, or q to quit--- invocation_hint=0xbfcb9f1c, marshal_data=0xb7a4d36b) at gtkmarshalers.c:83 #137 0xb787116f in g_cclosure_new_swap () from /usr/lib/libgobject-2.0.so.0 #138 0xb787179f in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 #139 0xb78809d8 in g_signal_stop_emission () from /usr/lib/libgobject-2.0.so.0 #140 0xb7881856 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #141 0xb7881e59 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #142 0xb7bef78f in gtk_widget_event_internal (widget=0x8109630, event=0x848b948) at gtkwidget.c:3732 #143 0xb7b0bcbd in IA__gtk_propagate_event (widget=0x8109630, event=0x848b948) at gtkmain.c:2208 #144 0xb7b0c0cb in IA__gtk_main_do_event (event=0x848b948) at gtkmain.c:1445 #145 0xb79aee1c in gdk_event_dispatch (source=0x0, callback=0, user_data=0x0) at gdkevents-x11.c:2291 #146 0xb78077d7 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0 #147 0xb780a896 in g_main_context_check () from /usr/lib/libglib-2.0.so.0 #148 0xb780abb8 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0 #149 0xb7b0b3c6 in IA__gtk_main () at gtkmain.c:1024 #150 0x080668ad in main (argc=0, argv=0x0) at /build/buildd/gnome-panel-2.14.0/./gnome-panel/main.c:93 (gdb) (gdb)