I'm attaching more debug information.
(gdb) c Continuing. [New Thread -1231053904 (LWP 4365)] [New Thread -1231320144 (LWP 4370)]
Program received signal SIGSEGV, Segmentation fault. [Switching to Thread -1228269888 (LWP 4279)] 0xb796d6c9 in IA__g_type_check_instance_is_a (type_instance=0x81c8e00, iface_type=136091936) at gtype.c:3113 3113 gtype.c: No such file or directory. in gtype.c (gdb) bt #0 0xb796d6c9 in IA__g_type_check_instance_is_a (type_instance=0x81c8e00, iface_type=136091936) at gtype.c:3113 #1 0xb79ca3a5 in e_source_group_peek_sources (group=0x81c8e00) at e-source-group.c:529 #2 0x08058e8d in calendar_sources_load_esource_list (source_data=0x81c8110) at calendar-sources.c:470 #3 0x08059280 in calendar_sources_load_sources (sources=0x81c8100, source_data=0x81c8110, sources_key=0x805aa20 "/apps/evolution/calendar/sources", selected_sources_key=0x805a9ec "/apps/evolution/calendar/display/selected_calendars", selected_sources_dir=0x805a9c8 "/apps/evolution/calendar/display") at calendar-sources.c:605 #4 0x08059344 in calendar_sources_get_appointment_sources (sources=0x81c8100) at calendar-sources.c:619 #5 0x08055357 in calendar_client_init (client=0x81bf640) at calendar-client.c:298 #6 0xb7972e96 in IA__g_type_create_instance (type=136082768) at gtype.c:1567 #7 0xb7959bc2 in g_object_constructor (type=136082768, n_construct_properties=0, construct_params=0x0) at gobject.c:1041 #8 0xb7957e38 in IA__g_object_newv (object_type=136082768, n_parameters=0, parameters=0x0) at gobject.c:937 #9 0xb79589b7 in IA__g_object_new_valist (object_type=136082768, first_property_name=0x0, var_args=0xbfc2ae88 "[EMAIL PROTECTED]") at gobject.c:981 #10 0xb7958b70 in IA__g_object_new (object_type=136082768, first_property_name=0x0) at gobject.c:795 #11 0x080558ea in calendar_client_new () at calendar-client.c:435 #12 0x080512df in add_appointments_and_tasks (cd=0x80bf7f0, vbox=0x807b5e0) at clock.c:1370 #13 0x08051794 in create_calendar (cd=0x80bf7f0, screen=0x807a090) at clock.c:1450 #14 0x08051c70 in update_popup (cd=0x80bf7f0) at clock.c:1580 #15 0x08051d4c in toggle_calendar (button=0x80c5418, cd=0x80bf7f0) at clock.c:1600 #16 0xb795fe1b in IA__g_cclosure_marshal_VOID__VOID (closure=0x80c5178, return_value=0x0, n_param_values=1, param_values=0xbfc2b18c, invocation_hint=0xbfc2b09c, marshal_data=0x8051d3b) at gmarshal.c:77 #17 0xb795298b in IA__g_closure_invoke (closure=0x80c5178, return_value=0x0, n_param_values=1, param_values=0xbfc2b18c, invocation_hint=0xbfc2b09c) at gclosure.c:490 #18 0xb7962f2d in signal_emit_unlocked_R (node=0x80c16e0, detail=0, instance=0x80c5418, emission_return=0x0, instance_and_params=0xbfc2b18c) at gsignal.c:2440 #19 0xb7964429 in IA__g_signal_emit_valist (instance=0x80c5418, signal_id=126, detail=0, var_args=0xbfc2b3cc "\0328ʷx�۷\030T\f\b��¿�8ʷ\030T\f\b�7\f\b\030�¿�I\227��&\230��8ʷ\030�¿---Type #20 0xb79645d9 in IA__g_signal_emit (instance=0x80c5418, signal_id=126, detail=0) at gsignal.c:2243 #21 0xb7ca3861 in IA__gtk_toggle_button_toggled (toggle_button=0x80c5418) at gtktogglebutton.c:342 #22 0xb7ca38d7 in gtk_toggle_button_clicked (button=0x80c5418) at gtktogglebutton.c:475 #23 0xb795fe1b in IA__g_cclosure_marshal_VOID__VOID (closure=0x80c37c8, return_value=0x0, n_param_values=1, param_values=0xbfc2b65c, invocation_hint=0xbfc2b56c, marshal_data=0xb7ca38a0) at gmarshal.c:77 #24 0xb7950f49 in g_type_class_meta_marshal (closure=0x80c37c8, return_value=0x0, n_param_values=1, param_values=0xbfc2b65c, invocation_hint=0xbfc2b56c, marshal_data=0x1a8) at gclosure.c:567 #25 0xb795298b in IA__g_closure_invoke (closure=0x80c37c8, return_value=0x0, n_param_values=1, param_values=0xbfc2b65c, invocation_hint=0xbfc2b56c) at gclosure.c:490 #26 0xb79633b8 in signal_emit_unlocked_R (node=0x80c1578, detail=0, instance=0x80c5418, emission_return=0x0, instance_and_params=0xbfc2b65c) at gsignal.c:2370 #27 0xb7964429 in IA__g_signal_emit_valist (instance=0x80c5418, signal_id=122, detail=0, var_args=0xbfc2b89c "�n���&\230�\030T\f\b��¿h6ʷ\030T\f\b06ʷظ¿\033�\225�\030T\f\bX3\f\b\001\200") at gsignal.c:2199 #28 0xb79645d9 in IA__g_signal_emit (instance=0x80c5418, signal_id=122, detail=0) at gsignal.c:2243 #29 0xb7b36f11 in IA__gtk_button_clicked (button=0x80c5418) at gtkbutton.c:845 #30 0xb7ca3668 in gtk_toggle_button_released (button=0x80c5418) at gtktogglebutton.c:462 #31 0xb795fe1b in IA__g_cclosure_marshal_VOID__VOID (closure=0x80c3768, return_value=0x0, n_param_values=1, param_values=0xbfc2bb1c, invocation_hint=0xbfc2ba2c, marshal_data=0xb7ca3630) at gmarshal.c:77 #32 0xb7950f49 in g_type_class_meta_marshal (closure=0x80c3768, return_value=0x0, n_param_values=1, param_values=0xbfc2bb1c, invocation_hint=0xbfc2ba2c, marshal_data=0x1a4) at gclosure.c:567 #33 0xb795298b in IA__g_closure_invoke (closure=0x80c3768, return_value=0x0, n_param_values=1, param_values=0xbfc2bb1c, invocation_hint=0xbfc2ba2c) at gclosure.c:490 #34 0xb79633b8 in signal_emit_unlocked_R (node=0x80c3780, detail=0, instance=0x80c5418, emission_return=0x0, instance_and_params=0xbfc2bb1c) at gsignal.c:2370 #35 0xb7964429 in IA__g_signal_emit_valist (instance=0x80c5418, signal_id=121, detail=0, var_args=0xbfc2bd5c "Zo��x�۷�o��x�¿\001p��\030T\f\b�o��\230�¿PR��\030T\f\b0�\a\b89\n\b�&\230�ܿ¿�i\n\bȽ¿I\017\225��i\n\b") at gsignal.c:2199 #36 0xb79645d9 in IA__g_signal_emit (instance=0x80c5418, signal_id=121, detail=0) at gsignal.c:2243 #37 0xb7b36fa1 in IA__gtk_button_released (button=0x80c5418) at gtkbutton.c:837 #38 0xb7b37001 in gtk_button_button_release (widget=0x80c5418, event=0x807b630) at gtkbutton.c:1273 #39 0xb7c05250 in _gtk_marshal_BOOLEAN__BOXED (closure=0x80a69c8, return_value=0xbfc2bf00, n_param_values=2, param_values=0xbfc2bfdc, invocation_hint=0xbfc2beec, marshal_data=0xb7b36fe0) at gtkmarshalers.c:83 #40 0xb7950f49 in g_type_class_meta_marshal (closure=0x80a69c8, return_value=0xbfc2bf00, n_param_values=2, param_values=0xbfc2bfdc, invocation_hint=0xbfc2beec, marshal_data=0xb4) at gclosure.c:567 #41 0xb795298b in IA__g_closure_invoke (closure=0x80a69c8, return_value=0xbfc2bf00, n_param_values=2, param_values=0xbfc2bfdc, invocation_hint=0xbfc2beec) at gclosure.c:490 #42 0xb796356f in signal_emit_unlocked_R (node=0x80a6e30, detail=0, instance=0x80c5418, emission_return=0xbfc2c19c, instance_and_params=0xbfc2bfdc) at gsignal.c:2478 #43 0xb7964208 in IA__g_signal_emit_valist (instance=0x80c5418, signal_id=43, detail=0, var_args=0xbfc2c220 "8�¿0�\a\b\030T\f\b?1Ϸ\030T\f\b89\n\b") at gsignal.c:2209 #44 0xb79645d9 in IA__g_signal_emit (instance=0x80c5418, signal_id=43, detail=0) at gsignal.c:2243 #45 0xb7ceef64 in gtk_widget_event_internal (widget=0x80c5418, event=0x807b630) at gtkwidget.c:3751 #46 0xb7bfebd3 in IA__gtk_propagate_event (widget=0x80c5418, event=0x807b630) at gtkmain.c:2195 #47 0xb7bffe07 in IA__gtk_main_do_event (event=0x807b630) at gtkmain.c:1424 #48 0xb7a98eea in gdk_event_dispatch (source=0x807e200, callback=0, user_data=0x0) at gdkevents-x11.c:2291 #49 0xb78e1731 in IA__g_main_context_dispatch (context=0x807e248) at gmain.c:2045 #50 0xb78e47a6 in g_main_context_iterate (context=0x807e248, block=1, dispatch=1, self=0x8063b08) at gmain.c:2677 #51 0xb78e4b67 in IA__g_main_loop_run (loop=0x8086e78) at gmain.c:2881 #52 0xb734fb33 in bonobo_main () from /usr/lib/libbonobo-2.so.0 #53 0xb734ddab in bonobo_generic_factory_main_timeout () from /usr/lib/libbonobo-2.so.0 #54 0xb734de34 in bonobo_generic_factory_main () from /usr/lib/libbonobo-2.so.0 #55 0xb7f6a9b1 in panel_applet_factory_main_closure () from /usr/lib/libpanel-applet-2.so.0 #56 0xb7f6aa93 in panel_applet_factory_main () from /usr/lib/libpanel-applet-2.so.0 #57 0x08054fbd in main (argc=54032, argv=0xb7f81ab8) at clock.c:2780 (gdb) info locals node = (TypeNode *) 0x5f6c6160 iface = (TypeNode *) 0x81c9920 check = <value optimized out> (gdb) frame 2 #2 0x08058e8d in calendar_sources_load_esource_list (source_data=0x81c8110) at calendar-sources.c:470 470 esources = e_source_group_peek_sources (l->data); (gdb) info locals esources = (GSList *) 0x0 s = (GSList *) 0x0 loaded_clients = (GSList *) 0x0 groups = (GSList *) 0x81a8298 l = (GSList *) 0x81aea08 emit_signal = 0 __PRETTY_FUNCTION__ = "calendar_sources_load_esource_list" (gdb) frame 3 #3 0x08059280 in calendar_sources_load_sources (sources=0x81c8100, source_data=0x81c8110, sources_key=0x805aa20 "/apps/evolution/calendar/sources", selected_sources_key=0x805a9ec "/apps/evolution/calendar/display/selected_calendars", selected_sources_dir=0x805a9c8 "/apps/evolution/calendar/display") at calendar-sources.c:605 605 calendar_sources_load_esource_list (source_data); (gdb) info locals gconf_client = (GConfClient *) 0x80a06a8 error = (GError *) 0x0