Console would give:
** ERROR **: file fm-tree-model.c: line 1510 (fm_tree_model_unref_node):
assertion failed: (parent->dummy_child_ref_count > 0)
aborting...


Backtrace was generated from '/usr/bin/nautilus'

Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
`system-supplied DSO at 0xffffe000' has disappeared; keeping its
symbols.
[Thread debugging using libthread_db enabled]
[New Thread -1225943360 (LWP 28576)]
[New Thread -1239987280 (LWP 5616)]
[New Thread -1239721040 (LWP 5615)]
[New Thread -1239454800 (LWP 5614)]
[New Thread -1239188560 (LWP 5613)]
[New Thread -1238922320 (LWP 5612)]
[New Thread -1238635600 (LWP 30084)]
[New Thread -1238369360 (LWP 29055)]
[New Thread -1238103120 (LWP 29054)]
[New Thread -1237779536 (LWP 28993)]
[New Thread -1234617424 (LWP 28584)]
[New Thread -1227773008 (LWP 28577)]
0xffffe410 in __kernel_vsyscall ()
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb76ba4ab in __waitpid_nocancel () from
/lib/tls/i686/cmov/libpthread.so.0
#2  0xb7d83508 in libgnomeui_module_info_get () from
/usr/lib/libgnomeui-2.so.0
#3  <signal handler called>
#4  0xffffe410 in __kernel_vsyscall ()
#5  0xb74379b1 in raise () from /lib/tls/i686/cmov/libc.so.6
#6  0xb74392c9 in abort () from /lib/tls/i686/cmov/libc.so.6
#7  0xb765b774 in IA__g_logv (log_domain=) at gmessages.c:497
#8  0xb765b7a8 in IA__g_log (log_domain=0x0, log_level=0, format=0x0)
    at gmessages.c:517
#9  0xb765b814 in IA__g_assert_warning (log_domain=0x0, file=0x0,
line=0, 
    pretty_function=0x80d9154 "fm_tree_model_unref_node", 
    expression=0x80d140e "node->ref_count > 0") at gmessages.c:552
#10 0x080c252b in fm_tree_model_unref_node (model=0x844a820,
iter=0xbfba2e4c)
    at fm-tree-model.c:1514
#11 0xb7bfc376 in IA__gtk_tree_model_unref_node (tree_model=0x844a820, 
    iter=0xbfba2e4c) at gtktreemodel.c:1307
#12 0xb7c022a9 in gtk_tree_model_sort_real_unref_node
(tree_model=0x844a530, 
    iter=0xbfba2eb0, propagate_unref=1) at gtktreemodelsort.c:1300
#13 0xb7bfc376 in IA__gtk_tree_model_unref_node (tree_model=0x844a530, 
    iter=0xbfba2eb0) at gtktreemodel.c:1307
#14 0xb7bfccdd in gtk_tree_row_reference_unref_path (path=0x86146a0, 
    model=0x844a530, depth=1) at gtktreemodel.c:1807
#15 0xb7bfd2b2 in IA__gtk_tree_row_reference_free (reference=0x85823f0)
    at gtktreemodel.c:2034
#16 0xb7c219ce in gtk_tree_view_destroy (object=0x8449940)
    at gtktreeview.c:1362
#17 0xb76d5ab3 in IA__g_cclosure_marshal_VOID__VOID (closure=0x80e2df0,

    return_value=0x0, n_param_values=1, param_values=0xbfba31ac, 
    invocation_hint=0xbfba30ac, marshal_data=0xb7c218d1) at
gmarshal.c:77
#18 0xb76c9d75 in g_type_class_meta_marshal (closure=0x80e2df0, 
    return_value=0x0, n_param_values=0, param_values=0xbfba31ac, 
    invocation_hint=0x0, marshal_data=0x0) at gclosure.c:569
#19 0xb76ca3a8 in IA__g_closure_invoke (closure=0x80e2df0,
return_value=0x0, 
    n_param_values=0, param_values=0x0, invocation_hint=0x0) at
gclosure.c:492
#20 0xb76d901f in signal_emit_unlocked_R (node=0x80e2e38, detail=0, 
    instance=0x8449940, emission_return=0x0,
instance_and_params=0xbfba31ac)
    at gsignal.c:2601
#21 0xb76da150 in IA__g_signal_emit_valist (instance=0x8449940,
signal_id=2, 
    detail=0, var_args=) at gsignal.c:2244
#22 0xb76da4c3 in IA__g_signal_emit (instance=0x0, signal_id=0,
detail=0)
    at gsignal.c:2288
#23 0xb7b6d050 in gtk_object_dispose (gobject=0x8449940) at
gtkobject.c:378
#24 0xb7c3871f in gtk_widget_dispose (object=0x8449940) at
gtkwidget.c:6656
#25 0xb76cd3aa in IA__g_object_run_dispose (object=0x8449940) at
gobject.c:567
#26 0xb7b6d00c in IA__gtk_object_destroy (object=0x8449940) at
gtkobject.c:363
#27 0xb7c3118e in IA__gtk_widget_destroy (widget=0x8449940) at
gtkwidget.c:1995
#28 0xb7a8a69b in gtk_bin_forall (container=0x8442b68,
include_internals=0, 
    callback=0xb7c3114d <IA__gtk_widget_destroy>, callback_data=0x0)
    at gtkbin.c:166
#29 0xb7b8e06e in gtk_scrolled_window_forall (container=0x8442b68, 
    include_internals=0, callback=0xb7c3114d <IA__gtk_widget_destroy>, 
    callback_data=0x0) at gtkscrolledwindow.c:816
#30 0xb7ac5dfe in IA__gtk_container_foreach (container=0x8442b68, 
    callback=0xb7c3114d <IA__gtk_widget_destroy>, callback_data=0x0)
    at gtkcontainer.c:1292
#31 0xb7ac7b61 in gtk_container_destroy (object=0x8442b68)
    at gtkcontainer.c:829
#32 0xb7b8dd30 in gtk_scrolled_window_destroy (object=0x8442b68)
    at gtkscrolledwindow.c:675
#33 0xb76d5ab3 in IA__g_cclosure_marshal_VOID__VOID (closure=0x80e2df0,

    return_value=0x0, n_param_values=1, param_values=0xbfba378c, 
    invocation_hint=0xbfba368c, marshal_data=0xb7b8dcbf) at
gmarshal.c:77
#34 0xb76c9d75 in g_type_class_meta_marshal (closure=0x80e2df0, 
    return_value=0x0, n_param_values=0, param_values=0xbfba378c, 
    invocation_hint=0x0, marshal_data=0x0) at gclosure.c:569
#35 0xb76ca3a8 in IA__g_closure_invoke (closure=0x80e2df0,
return_value=0x0, 
    n_param_values=0, param_values=0x0, invocation_hint=0x0) at
gclosure.c:492
#36 0xb76d901f in signal_emit_unlocked_R (node=0x80e2e38, detail=0, 
    instance=0x8442b68, emission_return=0x0,
instance_and_params=0xbfba378c)
    at gsignal.c:2601
#37 0xb76da150 in IA__g_signal_emit_valist (instance=0x8442b68,
signal_id=2, 
    detail=0, var_args=) at gsignal.c:2244
#38 0xb76da4c3 in IA__g_signal_emit (instance=0x0, signal_id=0,
detail=0)
    at gsignal.c:2288
#39 0xb7b6d050 in gtk_object_dispose (gobject=0x8442b68) at
gtkobject.c:378
#40 0xb7c3871f in gtk_widget_dispose (object=0x8442b68) at
gtkwidget.c:6656
#41 0x080bddf7 in fm_tree_view_dispose (object=0x8442b68)
    at fm-tree-view.c:1441
#42 0xb76cc905 in IA__g_object_unref (_object=0x8442b68) at
gobject.c:1674
#43 0xb7c343a4 in IA__gtk_widget_unparent (widget=0x8442b68)
    at gtkwidget.c:1967
#44 0xb7b69594 in gtk_notebook_real_remove (notebook=0x841bc50, 
    list=0x84358ac, destroying=1) at gtknotebook.c:2676
#45 0xb7b6b888 in gtk_notebook_destroy (object=0x841bc50) at
gtknotebook.c:900
#46 0xb76d5ab3 in IA__g_cclosure_marshal_VOID__VOID (closure=0x80e2df0,

    return_value=0x0, n_param_values=1, param_values=0xbfba3d6c, 
    invocation_hint=0xbfba3c6c, marshal_data=0xb7b6b848) at
gmarshal.c:77
#47 0xb76c9d75 in g_type_class_meta_marshal (closure=0x80e2df0, 
    return_value=0x0, n_param_values=0, param_values=0xbfba3d6c, 
    invocation_hint=0x0, marshal_data=0x0) at gclosure.c:569
#48 0xb76ca3a8 in IA__g_closure_invoke (closure=0x80e2df0,
return_value=0x0, 
    n_param_values=0, param_values=0x0, invocation_hint=0x0) at
gclosure.c:492
#49 0xb76d901f in signal_emit_unlocked_R (node=0x80e2e38, detail=0, 
    instance=0x841bc50, emission_return=0x0,
instance_and_params=0xbfba3d6c)
    at gsignal.c:2601
#50 0xb76da150 in IA__g_signal_emit_valist (instance=0x841bc50,
signal_id=2, 
    detail=0, var_args=) at gsignal.c:2244
#51 0xb76da4c3 in IA__g_signal_emit (instance=0x0, signal_id=0,
detail=0)
    at gsignal.c:2288
#52 0xb7b6d050 in gtk_object_dispose (gobject=0x841bc50) at
gtkobject.c:378
#53 0xb7c3871f in gtk_widget_dispose (object=0x841bc50) at
gtkwidget.c:6656
#54 0xb76cd3aa in IA__g_object_run_dispose (object=0x841bc50) at
gobject.c:567
#55 0xb7b6d00c in IA__gtk_object_destroy (object=0x841bc50) at
gtkobject.c:363
#56 0xb7c3118e in IA__gtk_widget_destroy (widget=0x841bc50) at
gtkwidget.c:1995
#57 0xb7a8ddc8 in gtk_box_forall (container=0x8418038,
include_internals=0, 
    callback=0xb7c3114d <IA__gtk_widget_destroy>, callback_data=0x0)
    at gtkbox.c:703
#58 0xb7ac5dfe in IA__gtk_container_foreach (container=0x8418038, 
    callback=0xb7c3114d <IA__gtk_widget_destroy>, callback_data=0x0)
    at gtkcontainer.c:1292
#59 0xb7ac7b61 in gtk_container_destroy (object=0x8418038)
    at gtkcontainer.c:829
#60 0xb76d5ab3 in IA__g_cclosure_marshal_VOID__VOID (closure=0x80e2df0,

    return_value=0x0, n_param_values=1, param_values=0xbfba42fc, 
    invocation_hint=0xbfba41fc, marshal_data=0x8087e0c) at
gmarshal.c:77
#61 0xb76c9d75 in g_type_class_meta_marshal (closure=0x80e2df0, 
    return_value=0x0, n_param_values=0, param_values=0xbfba42fc, 
    invocation_hint=0x0, marshal_data=0x0) at gclosure.c:569
#62 0xb76ca3a8 in IA__g_closure_invoke (closure=0x80e2df0,
return_value=0x0, 
    n_param_values=0, param_values=0x0, invocation_hint=0x0) at
gclosure.c:492
#63 0xb76d901f in signal_emit_unlocked_R (node=0x80e2e38, detail=0, 
    instance=0x8418038, emission_return=0x0,
instance_and_params=0xbfba42fc)
    at gsignal.c:2601
#64 0xb76da150 in IA__g_signal_emit_valist (instance=0x8418038,
signal_id=2, 
    detail=0, var_args=) at gsignal.c:2244
#65 0xb76da4c3 in IA__g_signal_emit (instance=0x0, signal_id=0,
detail=0)
    at gsignal.c:2288
#66 0xb7b6d050 in gtk_object_dispose (gobject=0x8418038) at
gtkobject.c:378
#67 0xb7c3871f in gtk_widget_dispose (object=0x8418038) at
gtkwidget.c:6656
#68 0xb76cd3aa in IA__g_object_run_dispose (object=0x8418038) at
gobject.c:567
#69 0xb7b6d00c in IA__gtk_object_destroy (object=0x8418038) at
gtkobject.c:363
#70 0xb7c3118e in IA__gtk_widget_destroy (widget=0x8418038) at
gtkwidget.c:1995
#71 0xb7b72268 in gtk_paned_forall (container=0x82dc9c0,
include_internals=0, 
    callback=0xb7c3114d <IA__gtk_widget_destroy>, callback_data=0x0)
    at gtkpaned.c:1076
#72 0xb7ac5dfe in IA__gtk_container_foreach (container=0x82dc9c0, 
    callback=0xb7c3114d <IA__gtk_widget_destroy>, callback_data=0x0)
    at gtkcontainer.c:1292
#73 0xb7ac7b61 in gtk_container_destroy (object=0x82dc9c0)
    at gtkcontainer.c:829
#74 0xb76d5ab3 in IA__g_cclosure_marshal_VOID__VOID (closure=0x80e2df0,

    return_value=0x0, n_param_values=1, param_values=0xbfba488c, 
    invocation_hint=0xbfba478c, marshal_data=0xb7ac7b25) at
gmarshal.c:77
#75 0xb76c9d75 in g_type_class_meta_marshal (closure=0x80e2df0, 
    return_value=0x0, n_param_values=0, param_values=0xbfba488c, 
    invocation_hint=0x0, marshal_data=0x0) at gclosure.c:569
#76 0xb76ca3a8 in IA__g_closure_invoke (closure=0x80e2df0,
return_value=0x0, 
    n_param_values=0, param_values=0x0, invocation_hint=0x0) at
gclosure.c:492
#77 0xb76d901f in signal_emit_unlocked_R (node=0x80e2e38, detail=0, 
    instance=0x82dc9c0, emission_return=0x0,
instance_and_params=0xbfba488c)
    at gsignal.c:2601
#78 0xb76da150 in IA__g_signal_emit_valist (instance=0x82dc9c0,
signal_id=2, 
    detail=0, var_args=) at gsignal.c:2244
#79 0xb76da4c3 in IA__g_signal_emit (instance=0x0, signal_id=0,
detail=0)
    at gsignal.c:2288
#80 0xb7b6d050 in gtk_object_dispose (gobject=0x82dc9c0) at
gtkobject.c:378
#81 0xb7c3871f in gtk_widget_dispose (object=0x82dc9c0) at
gtkwidget.c:6656
#82 0xb76cd3aa in IA__g_object_run_dispose (object=0x82dc9c0) at
gobject.c:567
#83 0xb7b6d00c in IA__gtk_object_destroy (object=0x82dc9c0) at
gtkobject.c:363
#84 0xb7c3118e in IA__gtk_widget_destroy (widget=0x82dc9c0) at
gtkwidget.c:1995
#85 0xb7baf55c in gtk_table_forall (container=0x82cc320,
include_internals=0, 
    callback=0xb7c3114d <IA__gtk_widget_destroy>, callback_data=0x0)
    at gtktable.c:963
#86 0xb7ac5dfe in IA__gtk_container_foreach (container=0x82cc320, 
    callback=0xb7c3114d <IA__gtk_widget_destroy>, callback_data=0x0)
    at gtkcontainer.c:1292
#87 0xb7ac7b61 in gtk_container_destroy (object=0x82cc320)
    at gtkcontainer.c:829
#88 0xb76d5ab3 in IA__g_cclosure_marshal_VOID__VOID (closure=0x80e2df0,

    return_value=0x0, n_param_values=1, param_values=0xbfba4e1c, 
    invocation_hint=0xbfba4d1c, marshal_data=0xb7ac7b25) at
gmarshal.c:77
#89 0xb76c9d75 in g_type_class_meta_marshal (closure=0x80e2df0, 
    return_value=0x0, n_param_values=0, param_values=0xbfba4e1c, 
    invocation_hint=0x0, marshal_data=0x0) at gclosure.c:569
#90 0xb76ca3a8 in IA__g_closure_invoke (closure=0x80e2df0,
return_value=0x0, 
    n_param_values=0, param_values=0x0, invocation_hint=0x0) at
gclosure.c:492
#91 0xb76d901f in signal_emit_unlocked_R (node=0x80e2e38, detail=0, 
    instance=0x82cc320, emission_return=0x0,
instance_and_params=0xbfba4e1c)
    at gsignal.c:2601
#92 0xb76da150 in IA__g_signal_emit_valist (instance=0x82cc320,
signal_id=2, 
    detail=0, var_args=) at gsignal.c:2244
#93 0xb76da4c3 in IA__g_signal_emit (instance=0x0, signal_id=0,
detail=0)
    at gsignal.c:2288
#94 0xb7b6d050 in gtk_object_dispose (gobject=0x82cc320) at
gtkobject.c:378
#95 0xb7c3871f in gtk_widget_dispose (object=0x82cc320) at
gtkwidget.c:6656
#96 0xb76cd3aa in IA__g_object_run_dispose (object=0x82cc320) at
gobject.c:567
#97 0xb7b6d00c in IA__gtk_object_destroy (object=0x82cc320) at
gtkobject.c:363
#98 0xb7c3118e in IA__gtk_widget_destroy (widget=0x82cc320) at
gtkwidget.c:1995
#99 0xb7a8a69b in gtk_bin_forall (container=0x82cbcf8,
include_internals=0, 
    callback=0xb7c3114d <IA__gtk_widget_destroy>, callback_data=0x0)
    at gtkbin.c:166
#100 0xb7ac5dfe in IA__gtk_container_foreach (container=0x82cbcf8, 
    callback=0xb7c3114d <IA__gtk_widget_destroy>, callback_data=0x0)
    at gtkcontainer.c:1292
#101 0xb7ac7b61 in gtk_container_destroy (object=0x82cbcf8)
    at gtkcontainer.c:829
#102 0xb7c45fc0 in gtk_window_destroy (object=0x82cbcf8) at
gtkwindow.c:3825
#103 0xb76d5ab3 in IA__g_cclosure_marshal_VOID__VOID (closure=0x80e2df0,

    return_value=0x0, n_param_values=1, param_values=0xbfba53cc, 
    invocation_hint=0xbfba52cc, marshal_data=0x807b860) at
gmarshal.c:77
#104 0xb76c9d75 in g_type_class_meta_marshal (closure=0x80e2df0, 
    return_value=0x0, n_param_values=0, param_values=0xbfba53cc, 
    invocation_hint=0x0, marshal_data=0x0) at gclosure.c:569
#105 0xb76ca3a8 in IA__g_closure_invoke (closure=0x80e2df0,
return_value=0x0, 
    n_param_values=0, param_values=0x0, invocation_hint=0x0) at
gclosure.c:492
#106 0xb76d901f in signal_emit_unlocked_R (node=0x80e2e38, detail=0, 
    instance=0x82cbcf8, emission_return=0x0,
instance_and_params=0xbfba53cc)
    at gsignal.c:2601
#107 0xb76da150 in IA__g_signal_emit_valist (instance=0x82cbcf8,
signal_id=2, 
    detail=0, var_args=) at gsignal.c:2244
#108 0xb76da4c3 in IA__g_signal_emit (instance=0x0, signal_id=0,
detail=0)
    at gsignal.c:2288
#109 0xb7b6d050 in gtk_object_dispose (gobject=0x82cbcf8) at
gtkobject.c:378
#110 0xb7c3871f in gtk_widget_dispose (object=0x82cbcf8) at
gtkwidget.c:6656
#111 0xb7c3f56f in gtk_window_dispose (object=0x82cbcf8) at
gtkwindow.c:1759
#112 0xb76cd3aa in IA__g_object_run_dispose (object=0x82cbcf8) at
gobject.c:567
#113 0xb7b6d00c in IA__gtk_object_destroy (object=0x82cbcf8) at
gtkobject.c:363
#114 0xb7c3118e in IA__gtk_widget_destroy (widget=0x82cbcf8)
    at gtkwidget.c:1995
#115 0x080694b4 in nautilus_window_delete_event_callback (widget=0x0, 
    event=0x818b754, user_data=0x0) at nautilus-application.c:926
#116 0xb7b507cc in _gtk_marshal_BOOLEAN__BOXED (closure=0x82cbcc8, 
    return_value=0xbfba5800, n_param_values=2, param_values=0xbfba58ec,

    invocation_hint=0xbfba57ec, marshal_data=0x8069492) at
gtkmarshalers.c:83
#117 0xb76ca3a8 in IA__g_closure_invoke (closure=0x82cbcc8,
return_value=0x0, 
    n_param_values=0, param_values=0x0, invocation_hint=0x0) at
gclosure.c:492
#118 0xb76d8e8d in signal_emit_unlocked_R (node=0x813c8c8, detail=0, 
    instance=0x82cbcf8, emission_return=0xbfba5a6c, 
    instance_and_params=0xbfba58ec) at gsignal.c:2555
#119 0xb76d9ec3 in IA__g_signal_emit_valist (instance=0x82cbcf8,
signal_id=46, 
    detail=0, var_args=0xbfba5af0
"\b[º¿T·\030\bø¼,\ba*÷ø¼,\b\200Y\023\b")
    at gsignal.c:2254
#120 0xb76da4c3 in IA__g_signal_emit (instance=0x0, signal_id=0,
detail=0)
    at gsignal.c:2288
#121 0xb7c3288f in gtk_widget_event_internal (widget=0x82cbcf8, 
    event=0x818b754) at gtkwidget.c:3735
#122 0xb7b4f4c4 in IA__gtk_main_do_event (event=0x818b754) at
gtkmain.c:1331
#123 0xb79f2b1d in gdk_event_dispatch (source=0x0, callback=0,
user_data=0x0)
    at gdkevents-x11.c:2291
#124 0xb765248e in IA__g_main_context_dispatch (context=0x810f1d0)
    at gmain.c:1934
#125 0xb7655496 in g_main_context_iterate (context=0x810f1d0, block=1, 
    dispatch=1, self=0x80e02a8) at gmain.c:2565
#126 0xb7655783 in IA__g_main_loop_run (loop=0x81de710) at gmain.c:2769
#127 0xb7b4e606 in IA__gtk_main () at gtkmain.c:976
#128 0x08079976 in main (argc=6, argv=0xbfba5fb4) at
nautilus-main.c:435

Thread 12 (Thread -1227773008 (LWP 28577)):
#0  0xffffe410 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb74ce0f4 in poll () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#2  0xb76552e8 in g_main_context_iterate (context=0x81703d8, block=1, 
    dispatch=1, self=0x8133348) at gmain.c:2867
	max_priority = 2147483647
	timeout = -1
	some_ready = #0  0xffffe410 in __kernel_vsyscall ()