Sebastien Bacher wrote: >Thanks for your bug. What version of Ubuntu do you use. Do you have an example of application to run to trigger the issue quickly? Could you get a backtrace when that happens using gdb: >- gdb $(pidof wnck-applet) >(gdb) thread apply all bt > >** Changed in: gnome-panel (Ubuntu) > Assignee: (unassigned) => Ubuntu Desktop Bugs > Status: Unconfirmed => Needs Info > > The product I'm using is GlancePlus from HP. It is non-free and somewhat expensive, so I doubt that you have access to it. Here is the backtrace as you requested: jmartens@mouse:~$ gdb wnck-applet 5469 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"...wnck-applet: No such file or directory. Attaching to process 5469 Reading symbols from /usr/lib/gnome-panel/wnck-applet...(no debugging symbols found)...done. Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1". (no debugging symbols found) Reading symbols from /usr/lib/libpanel-applet-2.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libpanel-applet-2.so.0 Reading symbols from /usr/lib/libwnck-1.so.18...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libwnck-1.so.18 Reading symbols from /usr/lib/libglade-2.0.so.0... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libglade-2.0.so.0 Reading symbols from /usr/lib/libgnomeui-2.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libgnomeui-2.so.0 Reading symbols from /usr/lib/liblpint-bonobo.so.0... (no debugging symbols found)...done. Loaded symbols for /usr/lib/liblpint-bonobo.so.0 Reading symbols from /usr/lib/libbonoboui-2.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libbonoboui-2.so.0 Reading symbols from /usr/lib/libgnome-2.so.0... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libgnome-2.so.0 Reading symbols from /usr/lib/libgconf-2.so.4...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libgconf-2.so.4 Reading symbols from /lib/tls/i686/cmov/libpthread.so.0... (no debugging symbols found)...done. [Thread debugging using libthread_db enabled] [New Thread -1224378688 (LWP 5469)] Loaded symbols for /lib/tls/i686/cmov/libpthread.so.0 Reading symbols from /usr/lib/libgtk-x11-2.0.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libgtk-x11-2.0.so.0 Reading symbols from /usr/lib/libgdk-x11-2.0.so.0... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libgdk-x11-2.0.so.0 Reading symbols from /usr/lib/libatk-1.0.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libatk-1.0.so.0 Reading symbols from /usr/lib/libgdk_pixbuf-2.0.so.0... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libgdk_pixbuf-2.0.so.0 Reading symbols from /usr/lib/libgobject-2.0.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libgobject-2.0.so.0 Reading symbols from /usr/lib/libglib-2.0.so.0... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libglib-2.0.so.0 Reading symbols from /lib/tls/i686/cmov/libc.so.6...(no debugging symbols found)...done. Loaded symbols for /lib/tls/i686/cmov/libc.so.6 Reading symbols from /usr/lib/libSM.so.6... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libSM.so.6 Reading symbols from /usr/lib/libICE.so.6...(no debugging symbols found)...done.Loaded symbols for /usr/lib/libICE.so.6 Reading symbols from /usr/lib/libgnome-keyring.so.0... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libgnome-keyring.so.0 Reading symbols from /usr/lib/libxml2.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libxml2.so.2 Reading symbols from /usr/lib/libz.so.1... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libz.so.1 Reading symbols from /usr/lib/libgnomecanvas-2.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libgnomecanvas-2.so.0 Reading symbols from /lib/libpopt.so.0... (no debugging symbols found)...done. Loaded symbols for /lib/libpopt.so.0 Reading symbols from /usr/lib/libart_lgpl_2.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libart_lgpl_2.so.2 Reading symbols from /usr/lib/libpangoft2-1.0.so.0... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libpangoft2-1.0.so.0 Reading symbols from /usr/lib/libpangocairo-1.0.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libpangocairo-1.0.so.0 Reading symbols from /usr/lib/libfontconfig.so.1... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libfontconfig.so.1 Reading symbols from /usr/lib/libXext.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libXext.so.6 Reading symbols from /usr/lib/libXrender.so.1... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libXrender.so.1 Reading symbols from /usr/lib/libXinerama.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libXinerama.so.1 Reading symbols from /usr/lib/libXi.so.6... ---Type to continue, or q to quit--- (no debugging symbols found)...done. Loaded symbols for /usr/lib/libXi.so.6 Reading symbols from /usr/lib/libXrandr.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libXrandr.so.2 Reading symbols from /usr/lib/libXcursor.so.1... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libXcursor.so.1 Reading symbols from /usr/lib/libXfixes.so.3...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libXfixes.so.3 Reading symbols from /usr/lib/libpango-1.0.so.0... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libpango-1.0.so.0 Reading symbols from /usr/lib/libcairo.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libcairo.so.2 Reading symbols from /usr/lib/libX11.so.6... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libX11.so.6 Reading symbols from /usr/lib/libgnomevfs-2.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libgnomevfs-2.so.0 Reading symbols from /usr/lib/libbonobo-2.so.0... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libbonobo-2.so.0 Reading symbols from /usr/lib/libbonobo-activation.so.4...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libbonobo-activation.so.4 Reading symbols from /usr/lib/libORBit-2.so.0... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libORBit-2.so.0 Reading symbols from /lib/tls/i686/cmov/libm.so.6...(no debugging symbols found)...done. Loaded symbols for /lib/tls/i686/cmov/libm.so.6 Reading symbols from /usr/lib/libgmodule-2.0.so.0... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libgmodule-2.0.so.0 Reading symbols from /lib/tls/i686/cmov/libdl.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/tls/i686/cmov/libdl.so.2 Reading symbols from /usr/lib/libgthread-2.0.so.0... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libgthread-2.0.so.0 Reading symbols from /usr/lib/libstartup-notification-1.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libstartup-notification-1.so.0 Reading symbols from /usr/lib/libXRes.so.1... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libXRes.so.1 Reading symbols from /usr/lib/libjpeg.so.62...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libjpeg.so.62 Reading symbols from /usr/lib/liblaunchpad-integration.so.0... (no debugging symbols found)...done. Loaded symbols for /usr/lib/liblaunchpad-integration.so.0 Reading symbols from /usr/lib/libesd.so.0...(no debugging symbols found)...done.Loaded symbols for /usr/lib/libesd.so.0 Reading symbols from /usr/lib/libaudiofile.so.0... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libaudiofile.so.0 Reading symbols from /lib/ld-linux.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/ld-linux.so.2 Reading symbols from /usr/lib/libfreetype.so.6... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libfreetype.so.6 Reading symbols from /usr/lib/libexpat.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libexpat.so.1 Reading symbols from /usr/lib/libXau.so.6... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libXau.so.6 Reading symbols from /usr/lib/libpng12.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libpng12.so.0 Reading symbols from /usr/lib/libgnutls.so.12... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libgnutls.so.12 Reading symbols from /usr/lib/libavahi-glib.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libavahi-glib.so.1 Reading symbols from /usr/lib/libavahi-common.so.3... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libavahi-common.so.3 Reading symbols from /usr/lib/libavahi-client.so.3...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libavahi-client.so.3 Reading symbols from /lib/tls/i686/cmov/libresolv.so.2... (no debugging symbols found)...done. Loaded symbols for /lib/tls/i686/cmov/libresolv.so.2 Reading symbols from /lib/tls/i686/cmov/libutil.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/tls/i686/cmov/libutil.so.1 Reading symbols from /usr/lib/libORBitCosNaming-2.so.0... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libORBitCosNaming-2.so.0 Reading symbols from /usr/lib/libasound.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libasound.so.2 Reading symbols from /usr/lib/libtasn1.so.2... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libtasn1.so.2 Reading symbols from /usr/lib/libgcrypt.so.11...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libgcrypt.so.11 Reading symbols from /usr/lib/libgpg-error.so.0... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libgpg-error.so.0 Reading symbols from /usr/lib/libdbus-1.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libdbus-1.so.2 Reading symbols from /lib/tls/i686/cmov/libnsl.so.1... (no debugging symbols found)...done. Loaded symbols for /lib/tls/i686/cmov/libnsl.so.1 Reading symbols from /lib/tls/i686/cmov/libnss_compat.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/tls/i686/cmov/libnss_compat.so.2 Reading symbols from /lib/tls/i686/cmov/libnss_nis.so.2... (no debugging symbols found)...done. Loaded symbols for /lib/tls/i686/cmov/libnss_nis.so.2 Reading symbols from /lib/tls/i686/cmov/libnss_files.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/tls/i686/cmov/libnss_files.so.2 Reading symbols from /usr/lib/gconv/ISO8859-1.so... (no debugging symbols found)...done. Loaded symbols for /usr/lib/gconv/ISO8859-1.so Reading symbols from /usr/lib/gtk-2.0/2.4.0/engines/libubuntulooks.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/gtk-2.0/2.4.0/engines/libubuntulooks.so Reading symbols from /usr/lib/pango/1.5.0/modules/pango-basic-fc.so... (no debugging symbols found)...done. Loaded symbols for /usr/lib/pango/1.5.0/modules/pango-basic-fc.so Reading symbols from /usr/lib/gtk-2.0/2.4.0/loaders/libpixbufloader-png.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/gtk-2.0/2.4.0/loaders/libpixbufloader-png.so ---Type to continue, or q to quit--- 0xb79746ef in g_hash_table_lookup () from /usr/lib/libglib-2.0.so.0 (gdb) thread apply all bt Thread 1 (Thread -1224378688 (LWP 5469)): #0 0xb79746ef in g_hash_table_lookup () from /usr/lib/libglib-2.0.so.0 #1 0xb7f011de in wnck_tasklist_get_size_hint_list () from /usr/lib/libwnck-1.so.18 #2 0xb79f6423 in g_cclosure_marshal_VOID__VOID () from /usr/lib/libgobject-2.0.so.0 #3 0xb79ea79f in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 #4 0xb79f94de in g_signal_stop_emission () from /usr/lib/libgobject-2.0.so.0 #5 0xb79faae9 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #6 0xb79fae59 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #7 0xb7efb8a3 in wnck_screen_get_default () from /usr/lib/libwnck-1.so.18 #8 0xb7efb926 in wnck_screen_get_default () from /usr/lib/libwnck-1.so.18 #9 0xb7efbe62 in wnck_screen_get_default () from /usr/lib/libwnck-1.so.18 #10 0xb7efd0ed in wnck_screen_get_default () from /usr/lib/libwnck-1.so.18 #11 0xb7981af2 in g_child_watch_add () from /usr/lib/libglib-2.0.so.0 #12 0xb797f7d7 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0 #13 0xb7982896 in g_main_context_check () from /usr/lib/libglib-2.0.so.0 #14 0xb7982bb8 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0 #15 0xb7414477 in bonobo_main () from /usr/lib/libbonobo-2.so.0 #16 0xb74129b1 in bonobo_generic_factory_main_timeout () from /usr/lib/libbonobo-2.so.0 #17 0xb7412a35 in bonobo_generic_factory_main () from /usr/lib/libbonobo-2.so.0 ---Type to continue, or q to quit--- #18 0xb7f1eed8 in panel_applet_factory_main_closure () from /usr/lib/libpanel-applet-2.so.0 #19 0xb7f1efaa in panel_applet_factory_main () from /usr/lib/libpanel-applet-2.so.0 #20 0x0804c59f in ?? () #21 0x080516c5 in _IO_stdin_used () #22 0x0805f908 in ?? () #23 0x0804c3c6 in ?? () #24 0x00000000 in ?? () #0 0xb79746ef in g_hash_table_lookup () from /usr/lib/libglib-2.0.so.0 (gdb) (gdb) q The program is running. Quit anyway (and detach it)? (y or n) y Detaching from program: /usr/lib/gnome-panel/wnck-applet, process 5469