.
Thread 3 (Thread 0xb41ffb40 (LWP 1833)):
#0  0xb776e424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb6934380 in __GI___poll (fds=fds@entry=0xb3802398, nfds=nfds@entry=3, timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = -516
        result = <optimized out>
#2  0xb6ab653b in g_poll (fds=0xb3802398, nfds=3, timeout=-1) at /build/buildd/glib2.0-2.33.1/./glib/gpoll.c:132
No locals.
#3  0xb6aa7db0 in g_main_context_poll (n_fds=3, fds=0xb3802398, timeout=<optimized out>, context=0xb4209d78, priority=<optimized out>) at /build/buildd/glib2.0-2.33.1/./glib/gmain.c:3440
        poll_func = <optimized out>
#4  g_main_context_iterate (context=0xb4209d78, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.1/./glib/gmain.c:3141
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 3
        allocated_nfds = <optimized out>
        fds = 0xb3802398
#5  0xb6aa828b in g_main_loop_run (loop=0xb4209d40) at /build/buildd/glib2.0-2.33.1/./glib/gmain.c:3340
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#6  0xb6c8519a in gdbus_shared_thread_func (user_data=0xb4209d60) at /build/buildd/glib2.0-2.33.1/./gio/gdbusprivate.c:277
        data = 0xb4209d60
#7  0xb6acc2f3 in g_thread_proxy (data=0xb4205230) at /build/buildd/glib2.0-2.33.1/./glib/gthread.c:801
        thread = 0xb4205230
#8  0xb6a03d4c in start_thread (arg=0xb41ffb40) at pthread_create.c:308
        __res = <optimized out>
        pd = 0xb41ffb40
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {-1230942220, 0, 4001536, -1272974680, 2113809325, 40342440}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#9  0xb6942ace in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
No locals.
.
Thread 2 (Thread 0xb4b33b40 (LWP 1832)):
#0  0xb776e424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb6934380 in __GI___poll (fds=fds@entry=0xb4200c78, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = -516
        result = <optimized out>
#2  0xb6ab653b in g_poll (fds=0xb4200c78, nfds=1, timeout=-1) at /build/buildd/glib2.0-2.33.1/./glib/gpoll.c:132
No locals.
#3  0xb6aa7db0 in g_main_context_poll (n_fds=1, fds=0xb4200c78, timeout=<optimized out>, context=0x9197b70, priority=<optimized out>) at /build/buildd/glib2.0-2.33.1/./glib/gmain.c:3440
        poll_func = <optimized out>
#4  g_main_context_iterate (context=0x9197b70, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.1/./glib/gmain.c:3141
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0xb4200c78
#5  0xb6aa828b in g_main_loop_run (loop=0xb4200c68) at /build/buildd/glib2.0-2.33.1/./glib/gmain.c:3340
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#6  0xb4bd81f4 in dconf_context_thread (data=0x9197b70) at dconfcontext.c:11
        context = 0x9197b70
        loop = <optimized out>
        __PRETTY_FUNCTION__ = "dconf_context_thread"
#7  0xb6acc2f3 in g_thread_proxy (data=0x9196c00) at /build/buildd/glib2.0-2.33.1/./glib/gthread.c:801
        thread = 0x9196c00
#8  0xb6a03d4c in start_thread (arg=0xb4b33b40) at pthread_create.c:308
        __res = <optimized out>
        pd = 0xb4b33b40
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {-1230942220, 0, 4001536, -1263324504, 612248492, 40342440}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#9  0xb6942ace in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
No locals.
.
Thread 1 (Thread 0xb4efd880 (LWP 1803)):
#0  0x080c716e in nautilus_window_menus_set_visibility_for_app_menu (window=window@entry=0x95a7140) at nautilus-window-menus.c:1118
        action_name = 0x815971c "New Window"
        shows_app_menu = -1229553810
        settings = <optimized out>
        action = <optimized out>
        idx = <optimized out>
#1  0xb6b6b412 in g_cclosure_marshal_VOID__PARAM (closure=closure@entry=0x92acf60, return_value=return_value@entry=0x0, n_param_values=n_param_values@entry=2, param_values=param_values@entry=0xbf80f490, invocation_hint=invocation_hint@entry=0xbf80f43c, marshal_data=marshal_data@entry=0x0) at /build/buildd/glib2.0-2.33.1/./gobject/gmarshal.c:1042
        callback = 0x80c7110 <nautilus_window_menus_set_visibility_for_app_menu>
        cc = 0x92acf60
        data1 = 0x95a7140
        data2 = 0x91575b8
        __PRETTY_FUNCTION__ = "g_cclosure_marshal_VOID__PARAM"
#2  0xb6b68706 in g_closure_invoke (closure=0x92acf60, return_value=return_value@entry=0x0, n_param_values=2, param_values=param_values@entry=0xbf80f490, invocation_hint=invocation_hint@entry=0xbf80f43c) at /build/buildd/glib2.0-2.33.1/./gobject/gclosure.c:777
        marshal = 0xb6b6b370 <g_cclosure_marshal_VOID__PARAM>
        marshal_data = 0x0
        in_marshal = 0
        real_closure = 0x92acf50
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#3  0xb6b7b2bf in signal_emit_unlocked_R (node=node@entry=0x913afa0, detail=detail@entry=674, instance=instance@entry=0x91575b8, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0xbf80f490) at /build/buildd/glib2.0-2.33.1/./gobject/gsignal.c:3547
        tmp = <optimized out>
        handler = 0x9594140
        accumulator = 0x0
        emission = {next = 0x0, instance = 0x91575b8, ihint = {signal_id = 1, detail = 674, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 4}
        class_closure = 0x913af68
        hlist = 0xbf80f43c
        handler_list = 0x938ed20
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 1
        max_sequential_handler_number = 59573
        return_value_altered = 1
#4  0xb6b8372b in g_signal_emit_valist (instance=instance@entry=0x91575b8, signal_id=signal_id@entry=1, detail=detail@entry=674, var_args=0xbf80f690 "\270u\025\tP", var_args@entry=0xbf80f68c "0p\027\t\270u\025\tP") at /build/buildd/glib2.0-2.33.1/./gobject/gsignal.c:3296
        instance_and_params = 0xbf80f490
        signal_return_type = 4
        param_values = 0xbf80f4a4
        node = 0x913afa0
        i = <optimized out>
        n_params = 1
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#5  0xb6b83923 in g_signal_emit (instance=instance@entry=0x91575b8, signal_id=1, detail=674) at /build/buildd/glib2.0-2.33.1/./gobject/gsignal.c:3352
        var_args = 0xbf80f68c "0p\027\t\270u\025\tP"
#6  0xb6b6cf0f in g_object_dispatch_properties_changed (object=0x91575b8, n_pspecs=1, pspecs=0xbf80f6dc) at /build/buildd/glib2.0-2.33.1/./gobject/gobject.c:1041
        i = <optimized out>
#7  0xb6b6ec80 in g_object_notify_by_spec_internal (pspec=<optimized out>, object=0x91575b8) at /build/buildd/glib2.0-2.33.1/./gobject/gobject.c:1133
        nqueue = 0x0
        notify_pspec = 0x9177030
#8  g_object_notify (object=object@entry=0x91575b8, property_name=0xb758212f "gtk-shell-shows-app-menu") at /build/buildd/glib2.0-2.33.1/./gobject/gobject.c:1175
        pspec = <optimized out>
        __PRETTY_FUNCTION__ = "g_object_notify"
#9  0xb7448836 in _gtk_settings_handle_event (event=0x958bf00) at /build/buildd/gtk+3.0-3.4.2/./gtk/gtksettings.c:2528
        screen = 0x916b028
        settings = 0x91575b8
        pspec = 0x9177030
        property_id = <optimized out>
#10 0xb73c5075 in gtk_main_do_event (event=0x958bf00) at /build/buildd/gtk+3.0-3.4.2/./gtk/gtkmain.c:1498
        event_widget = <optimized out>
        grab_widget = 0x0
        topmost_widget = 0x0
        window_group = <optimized out>
        rewritten_event = 0x0
        device = <optimized out>
        tmp_list = <optimized out>
        __PRETTY_FUNCTION__ = "gtk_main_do_event"
#11 0xb71e26ec in _gdk_event_emit (event=event@entry=0x958bf00) at /build/buildd/gtk+3.0-3.4.2/./gdk/gdkevents.c:69
No locals.
#12 0xb720b518 in gdk_event_source_dispatch (source=source@entry=0x91737b8, callback=0, user_data=0x0) at /build/buildd/gtk+3.0-3.4.2/./gdk/x11/gdkeventsource.c:358
        display = <optimized out>
        event = 0x958bf00
#13 0xb6aa7a93 in g_main_dispatch (context=0x9173708) at /build/buildd/glib2.0-2.33.1/./glib/gmain.c:2539
        dispatch = 0xb720b4e0 <gdk_event_source_dispatch>
        was_in_call = 0
        user_data = 0x0
        callback = 0
        cb_funcs = 0x0
        cb_data = 0x0
        current_source_link = {data = 0x91737b8, next = 0x0}
        need_destroy = <optimized out>
        source = 0x91737b8
        current = 0x91f5028
        i = <optimized out>
#14 g_main_context_dispatch (context=context@entry=0x9173708) at /build/buildd/glib2.0-2.33.1/./glib/gmain.c:3075
No locals.
#15 0xb6aa7e30 in g_main_context_iterate (context=context@entry=0x9173708, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.1/./glib/gmain.c:3146
        max_priority = 0
        timeout = 0
        some_ready = 1
        nfds = 9
        allocated_nfds = <optimized out>
        fds = <optimized out>
#16 0xb6aa7f11 in g_main_context_iteration (context=0x9173708, context@entry=0x0, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.33.1/./glib/gmain.c:3207
        retval = <optimized out>
#17 0xb6c4bd8c in g_application_run (application=0x9146010, argc=argc@entry=2, argv=argv@entry=0xbf80f9e4) at /build/buildd/glib2.0-2.33.1/./gio/gapplication.c:1570
        arguments = 0x9141a30
        status = -1431655766
        i = <optimized out>
        __PRETTY_FUNCTION__ = "g_application_run"
#18 0x08067ac8 in main (argc=2, argv=0xbf80f9e4) at nautilus-main.c:103
        retval = <optimized out>
        application = 0x9146010