#0  0x0000000801147db7 in IA__gtk_widget_get_toplevel (widget=0x1b0ce00)
    at gtkwidget.c:6151
        __inst = (GTypeInstance *) 0x1b0ce00
        __t = 6601600
        __r = 1
        __PRETTY_FUNCTION__ = "IA__gtk_widget_get_toplevel"
#1  0x00000008010504b5 in gtk_main_get_window_group (widget=0x1b0ce00)
    at gtkmain.c:1462
        toplevel = (GtkWidget *) 0x0
#2  0x00000008010501e8 in IA__gtk_main_do_event (event=0x9c5100)
    at gtkmain.c:1286
        event_widget = (GtkWidget *) 0x1b0ce00
        grab_widget = (GtkWidget *) 0x549c00
        window_group = (GtkWindowGroup *) 0x0
        next_event = (GdkEvent *) 0x1
        rewritten_event = (GdkEvent *) 0x0
        tmp_list = (GList *) 0x9c5100
        __PRETTY_FUNCTION__ = "IA__gtk_main_do_event"
#3  0x000000080139e408 in gdk_event_dispatch (source=0x1b0ce00,
    callback=0x7fffffffdf50, user_data=0x1) at gdkevents-x11.c:2291
        display = (GdkDisplay *) 0x9c5100
        event = (GdkEvent *) 0x9c5100
#4  0x0000000802b345b4 in g_main_dispatch (context=0x549c00) at gmain.c:1934
        dispatch = (gboolean (*)(GSource *, GSourceFunc,
    gpointer)) 0x80139e3c0 <gdk_event_dispatch>
        was_in_call = 0
        user_data = 0x0
        callback = 0
        cb_funcs = (GSourceCallbackFuncs *) 0x0
        cb_data = 0x0
        need_destroy = 20571072
        source = (GSource *) 0x547800
        depth = (gint *) 0x63a3a0
        i = 0
        __PRETTY_FUNCTION__ = "g_main_dispatch"
#5  0x0000000802b355dc in IA__g_main_context_dispatch (context=0x549c00)
    at gmain.c:2484
No locals.
#6  0x0000000802b359a5 in g_main_context_iterate (context=0x549c00, block=1,
    dispatch=1, self=0x64bb80) at gmain.c:2565
        max_priority = 0
        timeout = 0
        some_ready = 1
        nfds = 1
        allocated_nfds = 7
        fds = (GPollFD *) 0x7d8380
        __PRETTY_FUNCTION__ = "g_main_context_iterate"
#7  0x0000000802b35fe5 in IA__g_main_loop_run (loop=0x9ba330) at gmain.c:2769
        self = (GThread *) 0x621780
        __PRETTY_FUNCTION__ = "IA__g_main_loop_run"
#8  0x000000080104fc2f in IA__gtk_main () at gtkmain.c:974
        tmp_list = (GList *) 0x0
        functions = (GList *) 0x0
        init = (GtkInitFunction *) 0x56bce0
        loop = (GMainLoop *) 0x9ba330
#9  0x0000000803e6b718 in nsAppShell::ReleaseGlobals ()
   from /usr/X11R6/lib/firefox/components/libwidget_gtk2.so
No symbol table info available.
#10 0x000000080376a456 in nsAppShellService::AttemptingQuit ()
   from /usr/X11R6/lib/firefox/components/libnsappshell.so
No symbol table info available.
#11 0x000000000040b1aa in ?? ()
No symbol table info available.
#12 0x0000000000405fc0 in ?? ()
No symbol table info available.
#13 0x0000000000405eec in ?? ()
No symbol table info available.
#14 0x0000000800539000 in ?? ()
No symbol table info available.

etc..