.
Thread 3 (Thread 2019):
#0  0x00377416 in __kernel_vsyscall ()
No symbol table info available.
#1  0x00ccbd96 in __poll (fds=0x8d3c778, nfds=5, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <value optimized out>
        oldtype = -516
        result = <value optimized out>
#2  0x001cf8cb in g_poll (fds=0x8d3c778, nfds=5, timeout=-1) at /build/buildd/glib2.0-2.28.1/./glib/gpoll.c:132
No locals.
#3  0x001bf30f in g_main_context_poll (context=0x8d3adb8, block=1898656, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:3404
        poll_func = 0x1cf8a0 <g_poll>
#4  g_main_context_iterate (context=0x8d3adb8, block=1898656, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:3086
        max_priority = 2147483647
        timeout = -1
        some_ready = <value optimized out>
        nfds = 5
        allocated_nfds = <value optimized out>
        fds = 0x8d3c778
#5  0x001bfa93 in g_main_loop_run (loop=0x8d3ada8) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:3299
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#6  0x0081e2d4 in gdbus_shared_thread_func (data=0x0) at /build/buildd/glib2.0-2.28.1/./gio/gdbusprivate.c:276
No locals.
#7  0x001e838f in g_thread_create_proxy (data=0x8d3ae48) at /build/buildd/glib2.0-2.28.1/./glib/gthread.c:1897
        thread = 0x8d3ae48
        __PRETTY_FUNCTION__ = "g_thread_create_proxy"
#8  0x00d9ee99 in start_thread (arg=0xb6bffb70) at pthread_create.c:304
        pd = 0xb6bffb70
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {14352372, 0, 4001536, -1228934392, 2057918934, -1231959366}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <value optimized out>
        robust = <value optimized out>
        pagesize_m1 = <value optimized out>
        sp = <value optimized out>
        freesize = <value optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#9  0x00cda5fe in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
No locals.
.
Thread 2 (Thread 2018):
#0  0x00377416 in __kernel_vsyscall ()
No symbol table info available.
#1  0x00ccbd96 in __poll (fds=0x8cd1808, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <value optimized out>
        oldtype = -516
        result = <value optimized out>
#2  0x001cf8cb in g_poll (fds=0x8cd1808, nfds=1, timeout=-1) at /build/buildd/glib2.0-2.28.1/./glib/gpoll.c:132
No locals.
#3  0x001bf30f in g_main_context_poll (context=0x8cd15d0, block=1898656, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:3404
        poll_func = 0x1cf8a0 <g_poll>
#4  g_main_context_iterate (context=0x8cd15d0, block=1898656, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:3086
        max_priority = 2147483647
        timeout = -1
        some_ready = <value optimized out>
        nfds = 1
        allocated_nfds = <value optimized out>
        fds = 0x8cd1808
#5  0x001bfa93 in g_main_loop_run (loop=0x8ccd988) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:3299
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#6  0x050aae4a in dconf_context_thread (data=0x8cd15d0) at dconfcontext.c:11
        context = 0x8cd15d0
        loop = <value optimized out>
        __PRETTY_FUNCTION__ = "dconf_context_thread"
#7  0x001e838f in g_thread_create_proxy (data=0x8cd1660) at /build/buildd/glib2.0-2.28.1/./glib/gthread.c:1897
        thread = 0x8cd1660
        __PRETTY_FUNCTION__ = "g_thread_create_proxy"
#8  0x00d9ee99 in start_thread (arg=0xb75beb70) at pthread_create.c:304
        pd = 0xb75beb70
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {14352372, 0, 4001536, -1218714872, -1299621419, -1231959366}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <value optimized out>
        robust = <value optimized out>
        pagesize_m1 = <value optimized out>
        sp = <value optimized out>
        freesize = <value optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#9  0x00cda5fe in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
No locals.
.
Thread 1 (Thread 2017):
#0  0x001f3b37 in _g_utf8_normalize_wc (str=0x0, max_len=-1, mode=G_NORMALIZE_ALL) at /build/buildd/glib2.0-2.28.1/./glib/gunidecomp.c:364
        n_wc = 0
        wc_buffer = <value optimized out>
        p = 0x0
        last_start = <value optimized out>
        do_compat = 1
#1  0x001f4183 in g_utf8_normalize (str=0x0, len=-1, mode=G_NORMALIZE_ALL) at /build/buildd/glib2.0-2.28.1/./glib/gunidecomp.c:525
        result_wc = <value optimized out>
        result = <value optimized out>
#2  0x0044fa22 in IA__gtk_entry_completion_complete (completion=0x8d53890) at /build/buildd/gtk+2.0-2.24.1/gtk/gtkentrycompletion.c:1177
        tmp = <value optimized out>
        __PRETTY_FUNCTION__ = "IA__gtk_entry_completion_complete"
#3  0x0804f327 in save_and_use_model (completion=0x8d53890, model=0x8e5fca0) at timezone-completion.c:68
        priv = <value optimized out>
#4  0x0804f400 in geonames_data_ready (object=0x8f18000, res=0x8f12950, user_data=0x8d53890) at timezone-completion.c:172
        completion = 0x8d53890
        priv = 0x8d53900
        error = 0x8f84460
        stream = 0x0
        parser = <value optimized out>
#5  0x007c4c5f in g_simple_async_result_complete (simple=0x8f12950) at /build/buildd/glib2.0-2.28.1/./gio/gsimpleasyncresult.c:747
        current_source = <value optimized out>
        current_context = <value optimized out>
        __PRETTY_FUNCTION__ = "g_simple_async_result_complete"
#6  0x07ad16c8 in _g_simple_async_result_complete_with_cancellable (result=0x8f12950, cancellable=0x8e33da0) at gvfsdaemondbus.c:1052
No locals.
#7  0x07ac3ed9 in async_path_call_done (reply=0x0, connection=0x8e46470, io_error=0x8ee1cc0, _data=0x8f1d660) at gdaemonfile.c:599
        data = 0x8f1d660
        result = <value optimized out>
#8  0x07ad0006 in async_call_finish (async_call=0x8f1c480, reply=<value optimized out>) at gvfsdaemondbus.c:438
No locals.
#9  0x04a3d3af in handle_async_reply (pending=<value optimized out>, data=<value optimized out>) at gvfsdbusutils.c:1219
        reply = 0x8ed1a90
        error = 0x8f847c0
#10 0x010033b1 in _dbus_pending_call_complete (pending=0x8f28788) at dbus-pending-call.c:197
        user_data = <value optimized out>
#11 0x00fee896 in complete_pending_call_and_unlock (connection=0x8e46470, pending=0x8f28788, message=0x8ed1a90) at dbus-connection.c:2308
No locals.
#12 0x00ff20d0 in dbus_connection_dispatch (connection=0x8e46470) at dbus-connection.c:4593
        message = 0x8ed1a90
        link = <value optimized out>
        filter_list_copy = <value optimized out>
        message_link = 0x8cd8174
        result = DBUS_HANDLER_RESULT_NOT_YET_HANDLED
        pending = <value optimized out>
        reply_serial = <value optimized out>
        status = <value optimized out>
        __FUNCTION__ = "dbus_connection_dispatch"
#13 0x04a3becd in dbus_source_dispatch (source=0x8e0d6b0, callback=0, user_data=0x0) at gvfsdbusutils.c:810
        connection = 0x8e46470
#14 0x001bec08 in g_main_dispatch (context=0x8ca8470) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:2440
        dispatch = 0x4a3bea0 <dbus_source_dispatch>
        was_in_call = 0
        user_data = 0x0
        callback = 0
        cb_funcs = 0x0
        cb_data = 0x0
        current_source_link = {data = 0x8e0d6b0, next = 0x0}
        need_destroy = <value optimized out>
        source = 0x8e0d6b0
        current = 0x8d37ee0
        i = <value optimized out>
#15 g_main_context_dispatch (context=0x8ca8470) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:3013
No locals.
#16 0x001bf3d0 in g_main_context_iterate (context=0x8ca8470, block=1898656, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:3091
        max_priority = 0
        timeout = 0
        some_ready = 1
        nfds = <value optimized out>
        allocated_nfds = <value optimized out>
        fds = 0x8dae0a8
#17 0x001bfa93 in g_main_loop_run (loop=0x8c8b8a0) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:3299
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#18 0x004c0a49 in IA__gtk_main () at /build/buildd/gtk+2.0-2.24.1/gtk/gtkmain.c:1255
        tmp_list = <value optimized out>
        functions = 0x0
        init = <value optimized out>
        loop = 0x8c8b8a0
#19 0x0804dc80 in main (argc=1, argv=0xbfaaa164) at datetime-prefs.c:569
        app = 0x8cd6850