Comment 14 for bug 11283

it seems to happen in the same place. here are the backtraces for
gnome-panel, nautilus and gnome-vfs-daemon.

gnome-panel:

#0 0xffffe410 in __kernel_vsyscall ()
#1 0xb78bf00e in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb772471d in giop_recv_buffer_get () from /usr/lib/libORBit-2.so.0
#3 0xb7727fa6 in ORBit_small_invoke_stub () from /usr/lib/libORBit-2.so.0
#4 0xb7727e7d in ORBit_small_invoke_stub_n () from /usr/lib/libORBit-2.so.0
#5 0xb773b076 in ORBit_c_stub_invoke () from /usr/lib/libORBit-2.so.0
#6 0xb7d182fc in GNOME_VFS_Daemon_registerVolumeMonitor (_obj=0xfffffffc,
    client=0x8236f08, ev=0xfffffffc) at GNOME_VFS_Daemon-stubs.c:414
#7 0xb7d4265c in gnome_vfs_volume_monitor_client_class_init (class=0x8236590)
    at gnome-vfs-volume-monitor-client.c:87
#8 0xb77aedd0 in g_type_free_instance () from /usr/lib/libgobject-2.0.so.0
#9 0xb77b0108 in g_type_class_ref () from /usr/lib/libgobject-2.0.so.0
#10 0xb779beff in g_object_newv () from /usr/lib/libgobject-2.0.so.0
#11 0xb779c243 in g_object_new_valist () from /usr/lib/libgobject-2.0.so.0
#12 0xb779b7d8 in g_object_new () from /usr/lib/libgobject-2.0.so.0
#13 0xb7d430f1 in _gnome_vfs_get_volume_monitor_internal (create=1)
    at gnome-vfs-volume-monitor.c:250
#14 0xb7d4313e in gnome_vfs_get_volume_monitor ()
    at gnome-vfs-volume-monitor.c:277
#15 0x08087309 in panel_menu_bar_instance_init (menubar=0x8234120,
    klass=0x814f6d0) at panel-menu-bar.c:693
#16 0xb77ae0e5 in g_type_create_instance () from /usr/lib/libgobject-2.0.so.0
#17 0xb779c299 in g_object_new_valist () from /usr/lib/libgobject-2.0.so.0
#18 0xb779bac2 in g_object_newv () from /usr/lib/libgobject-2.0.so.0
#19 0xb779c243 in g_object_new_valist () from /usr/lib/libgobject-2.0.so.0
#20 0xb779b7d8 in g_object_new () from /usr/lib/libgobject-2.0.so.0
#21 0x080876bd in panel_menu_bar_load (panel=0x8164488, locked=1, position=0,
    exactpos=1, id=0xb77c1708 "$\006\003") at panel-menu-bar.c:878
#22 0x0807134b in panel_applet_load_idle_handler (dummy=0x0) at applet.c:834
#23 0xb7671a83 in g_child_watch_add () from /usr/lib/libglib-2.0.so.0
#24 0xb766ed7a in g_main_depth () from /usr/lib/libglib-2.0.so.0
#25 0xb766fd2e in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#26 0xb7670050 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#27 0xb767059a in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#28 0xb7acd39c in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#29 0x0806384f in main (argc=2, argv=0xbffffc24) at main.c:93

gnome-vfs-daemon:

#0 0xffffe410 in __kernel_vsyscall ()
#1 0xb7a8d20b in __lll_mutex_lock_wait ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb7a8a690 in _L_mutex_lock_26 () from /lib/tls/i686/cmov/libpthread.so.0
#3 0x08065f90 in ?? ()
#4 0x080b0d9c in ?? ()
#5 0x00000000 in ?? ()
#6 0xbfffed68 in ?? ()
#7 0xb7fd4b8c in __JCR_LIST__ () from /usr/lib/libgnomevfs-2.so.0
#8 0xbfffeec0 in ?? ()
#9 0xbfffed78 in ?? ()
#10 0xb7fbc067 in _gnome_vfs_get_volume_monitor_internal (create=-1208132224)
    at gnome-vfs-volume-monitor.c:244
#11 0xb7fbc067 in _gnome_vfs_get_volume_monitor_internal (create=1)
    at gnome-vfs-volume-monitor.c:244
#12 0xb7fbc13e in gnome_vfs_get_volume_monitor ()
    at gnome-vfs-volume-monitor.c:277
#13 0x0804e9f6 in gnome_vfs_daemon_get_type ()
#14 0x08050fbe in _ORBIT_skel_small_GNOME_VFS_Daemon_registerVolumeMonitor ()
#15 0xb7eada3a in ORBit_POA_setup_root () from /usr/lib/libORBit-2.so.0
#16 0xb7eb2527 in ORBit_OAObject_invoke () from /usr/lib/libORBit-2.so.0
#17 0xb7e9e22f in ORBit_small_invoke_adaptor () from /usr/lib/libORBit-2.so.0
#18 0xb7eaddc6 in ORBit_recv_buffer_return_sys_exception ()
   from /usr/lib/libORBit-2.so.0
#19 0xb7eae1b4 in ORBit_recv_buffer_return_sys_exception ()
   from /usr/lib/libORBit-2.so.0
#20 0xb7e989fa in giop_thread_queue_process () from /usr/lib/libORBit-2.so.0
#21 0xb7e9a72f in giop_recv_buffer_get () from /usr/lib/libORBit-2.so.0
#22 0xb7e9dfa6 in ORBit_small_invoke_stub () from /usr/lib/libORBit-2.so.0
#23 0xb7e9de7d in ORBit_small_invoke_stub_n () from /usr/lib/libORBit-2.so.0
#24 0xb7eb1076 in ORBit_c_stub_invoke () from /usr/lib/libORBit-2.so.0
#25 0xb7f6df7a in ConfigDatabase_all_dirs () from /usr/lib/libgconf-2.so.4
#26 0xb7f6320c in gconf_engine_all_dirs () from /usr/lib/libgconf-2.so.4
#27 0xb7f674dd in gconf_client_clear_cache () from /usr/lib/libgconf-2.so.4
#28 0xb7f66c62 in gconf_client_add_dir () from /usr/lib/libgconf-2.so.4
#29 0x08053e7b in gnome_vfs_volume_monitor_daemon_get_type ()
#30 0xb7e620e5 in g_type_create_instance () from /usr/lib/libgobject-2.0.so.0
#31 0xb7e50299 in g_object_new_valist () from /usr/lib/libgobject-2.0.so.0
#32 0xb7e4fac2 in g_object_newv () from /usr/lib/libgobject-2.0.so.0
#33 0xb7e50243 in g_object_new_valist () from /usr/lib/libgobject-2.0.so.0
#34 0xb7e4f7d8 in g_object_new () from /usr/lib/libgobject-2.0.so.0
#35 0xb7fbc0f1 in _gnome_vfs_get_volume_monitor_internal (create=1)
    at gnome-vfs-volume-monitor.c:250
#36 0xb7fbc13e in gnome_vfs_get_volume_monitor ()
    at gnome-vfs-volume-monitor.c:277
#37 0x0804e9f6 in gnome_vfs_daemon_get_type ()
#38 0x08050fbe in _ORBIT_skel_small_GNOME_VFS_Daemon_registerVolumeMonitor ()
#39 0xb7eada3a in ORBit_POA_setup_root () from /usr/lib/libORBit-2.so.0
#40 0xb7eb2527 in ORBit_OAObject_invoke () from /usr/lib/libORBit-2.so.0
#41 0xb7e9e22f in ORBit_small_invoke_adaptor () from /usr/lib/libORBit-2.so.0
#42 0xb7eaddc6 in ORBit_recv_buffer_return_sys_exception ()
   from /usr/lib/libORBit-2.so.0
#43 0xb7eae1b4 in ORBit_recv_buffer_return_sys_exception ()
   from /usr/lib/libORBit-2.so.0
#44 0xb7e989fa in giop_thread_queue_process () from /usr/lib/libORBit-2.so.0
#45 0xb7e98144 in giop_thread_same_key () from /usr/lib/libORBit-2.so.0
#46 0xb7ebac51 in link_servers_move_io_T () from /usr/lib/libORBit-2.so.0
#47 0xb7dded7a in g_main_depth () from /usr/lib/libglib-2.0.so.0
#48 0xb7ddfd2e in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#49 0xb7de0050 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#50 0xb7de059a in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#51 0xb7f0bd2f in bonobo_main () from /usr/lib/libbonobo-2.so.0
#52 0x0804f429 in main ()

nautilus:

#0 0xffffe410 in __kernel_vsyscall ()
#1 0xb7c0100e in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb765f71d in giop_recv_buffer_get () from /usr/lib/libORBit-2.so.0
#3 0xb7662fa6 in ORBit_small_invoke_stub () from /usr/lib/libORBit-2.so.0
#4 0xb7662e7d in ORBit_small_invoke_stub_n () from /usr/lib/libORBit-2.so.0
#5 0xb7676076 in ORBit_c_stub_invoke () from /usr/lib/libORBit-2.so.0
#6 0xb77502fc in GNOME_VFS_Daemon_registerVolumeMonitor (_obj=0xfffffffc,
    client=0x8172d10, ev=0xfffffffc) at GNOME_VFS_Daemon-stubs.c:414
#7 0xb777a65c in gnome_vfs_volume_monitor_client_class_init (class=0x8174eb0)
    at gnome-vfs-volume-monitor-client.c:87
#8 0xb77b3dd0 in g_type_free_instance () from /usr/lib/libgobject-2.0.so.0
#9 0xb77b5108 in g_type_class_ref () from /usr/lib/libgobject-2.0.so.0
#10 0xb77a0eff in g_object_newv () from /usr/lib/libgobject-2.0.so.0
#11 0xb77a1243 in g_object_new_valist () from /usr/lib/libgobject-2.0.so.0
#12 0xb77a07d8 in g_object_new () from /usr/lib/libgobject-2.0.so.0
#13 0xb777b0f1 in _gnome_vfs_get_volume_monitor_internal (create=1)
    at gnome-vfs-volume-monitor.c:250
#14 0xb777b13e in gnome_vfs_get_volume_monitor ()
    at gnome-vfs-volume-monitor.c:277
#15 0x0806741e in nautilus_application_instance_init (application=0x81749b0)
    at nautilus-application.c:164
#16 0xb77b30e5 in g_type_create_instance () from /usr/lib/libgobject-2.0.so.0
#17 0xb77a1299 in g_object_new_valist () from /usr/lib/libgobject-2.0.so.0
#18 0xb7703bf3 in bonobo_object_query_local_interface ()
   from /usr/lib/libbonobo-2.so.0
#19 0xb77a0ac2 in g_object_newv () from /usr/lib/libgobject-2.0.so.0
#20 0xb77a1243 in g_object_new_valist () from /usr/lib/libgobject-2.0.so.0
#21 0xb77a07d8 in g_object_new () from /usr/lib/libgobject-2.0.so.0
#22 0x080674e4 in nautilus_application_new () at nautilus-application.c:192
#23 0x080776bd in main (argc=4, argv=0xbffffc14) at nautilus-main.c:318