Here's a backtrace. It will be better, when somebody tells us the secret of where the libgnome-bluetooth debug symbols are hidden. This is looking like user-interface code to me. #0 0x00140a4e in ?? () from /usr/lib/libgnome-bluetooth.so.8 #1 0x003e19d4 in gtk_tree_model_filter_real_visible (filter=0x806c800, child_model=0x806c778, child_iter=0xbfffe8a0) at /build/buildd/gtk+3.0-3.2.0/./gtk/gtktreemodelfilter.c:1260 #2 0x003e6669 in gtk_tree_model_filter_visible (child_iter=0xbfffe8a0, self=0x806c800) at /build/buildd/gtk+3.0-3.2.0/./gtk/gtktreemodelfilter.c:1290 #3 gtk_tree_model_filter_row_changed (c_model=0x806c778, c_path=0x8174550, c_iter=0x81764c0, data=0x806c800) at /build/buildd/gtk+3.0-3.2.0/./gtk/gtktreemodelfilter.c:2041 #4 0x002d4cfa in _gtk_marshal_VOID__BOXED_BOXED (closure=0x824d220, return_value=0x0, n_param_values=3, param_values=0x8261260, invocation_hint=0xbfffea00, marshal_data=0x0) at /build/buildd/gtk+3.0-3.2.0/./gtk/gtkmarshalers.c:1310 #5 0x0074ec3c in g_closure_invoke (closure=0x824d220, return_value=0x0, n_param_values=3, param_values=0x8261260, invocation_hint=0xbfffea00) at /build/buildd/glib2.0-2.30.0/./gobject/gclosure.c:774 #6 0x007619f0 in signal_emit_unlocked_R (node=0x8119ff8, detail=0, instance=0x806c778, emission_return=0x0, instance_and_params=0x8261260) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3272 #7 0x0076a787 in g_signal_emit_valist (instance=0x806c778, signal_id=187, detail=0, var_args=0xbfffebc4 "\020\354\377\277\020\235\027\b\t\336=") at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3003 #8 0x0076a8f3 in g_signal_emit (instance=0x806c778, signal_id=187, detail=0) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3060 #9 0x003e08c2 in gtk_tree_model_row_changed (tree_model=0x806c778, path=0x8174550, iter=0xbfffec10) at /build/buildd/gtk+3.0-3.2.0/./gtk/gtktreemodel.c:1803 #10 0x003e67b4 in gtk_tree_model_filter_row_changed (c_model=0x808a6d8, c_path=0x8179d10, c_iter=0x81663d0, data=0x806c778) at /build/buildd/gtk+3.0-3.2.0/./gtk/gtktreemodelfilter.c:2088 #11 0x002d4cfa in _gtk_marshal_VOID__BOXED_BOXED (closure=0x824d238, return_value=0x0, n_param_values=3, param_values=0x8261320, invocation_hint=0xbfffed90, marshal_data=0x0) at /build/buildd/gtk+3.0-3.2.0/./gtk/gtkmarshalers.c:1310 #12 0x0074ec3c in g_closure_invoke (closure=0x824d238, return_value=0x0, n_param_values=3, param_values=0x8261320, invocation_hint=0xbfffed90) at /build/buildd/glib2.0-2.30.0/./gobject/gclosure.c:774 #13 0x007619f0 in signal_emit_unlocked_R (node=0x8119ff8, detail=0, instance=0x808a6d8, emission_return=0x0, instance_and_params=0x8261320) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3272 #14 0x0076a787 in g_signal_emit_valist (instance=0x808a6d8, signal_id=187, detail=0, var_args=0xbfffef54 "\260I\021\b") at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3003 #15 0x0076a8f3 in g_signal_emit (instance=0x808a6d8, signal_id=187, detail=0) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3060 #16 0x003e08c2 in gtk_tree_model_row_changed (tree_model=0x808a6d8, path=0x8179d10, iter=0xbffff000) at /build/buildd/gtk+3.0-3.2.0/./gtk/gtktreemodel.c:1803 #17 0x003f1712 in gtk_tree_store_set_valist (tree_store=0x808a6d8, ---Type to continue, or q to quit--- iter=0xbffff000, var_args=0xbfffefe8 "\t") at /build/buildd/gtk+3.0-3.2.0/./gtk/gtktreestore.c:1164 #18 0x003f174b in gtk_tree_store_set (tree_store=0x808a6d8, iter=0xbffff000) at /build/buildd/gtk+3.0-3.2.0/./gtk/gtktreestore.c:1193 #19 0x001383b3 in ?? () from /usr/lib/libgnome-bluetooth.so.8 #20 0x0013edaa in ?? () from /usr/lib/libgnome-bluetooth.so.8 #21 0x00a2fdba in marshal_dbus_message_to_g_marshaller (closure=0x81224a0, return_value=0x0, n_param_values=3, param_values=0x8261400, invocation_hint=0xbffff1c0, marshal_data=0x0) at dbus-gproxy.c:1733 #22 0x0074ec3c in g_closure_invoke (closure=0x81224a0, return_value=0x0, n_param_values=3, param_values=0x8261400, invocation_hint=0xbffff1c0) at /build/buildd/glib2.0-2.30.0/./gobject/gclosure.c:774 #23 0x007619f0 in signal_emit_unlocked_R (node=0x811d470, detail=1227, instance=0x8117f28, emission_return=0x0, instance_and_params=0x8261400) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3272 #24 0x0076a787 in g_signal_emit_valist (instance=0x8117f28, signal_id=194, detail=1227, var_args=0xbffff384 "") at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3003 #25 0x0076a8f3 in g_signal_emit (instance=0x8117f28, signal_id=194, detail=1227) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3060 #26 0x00a30460 in dbus_g_proxy_emit_remote_signal (message=0x8123440, proxy=) at dbus-gproxy.c:1786 #27 dbus_g_proxy_manager_filter (user_data=0x811e750, message=0x8123440, connection=) at dbus-gproxy.c:1353 #28 dbus_g_proxy_manager_filter (connection=0x811a4e8, message=0x8123440, user_data=0x811e750) at dbus-gproxy.c:1194 #29 0x00edb441 in dbus_connection_dispatch () from /lib/i386-linux-gnu/libdbus-1.so.3 #30 0x00a2895d in message_queue_dispatch (source=0x81134d8, callback=0, user_data=0x0) at dbus-gmain.c:90 #31 0x007d425f in g_main_dispatch (context=0x8087ea8) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:2441 #32 g_main_context_dispatch (context=0x8087ea8) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3011 #33 0x007d4990 in g_main_context_iterate (context=0x8087ea8, block=8270624, dispatch=1, self=) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3089 #34 0x007d4f9b in g_main_loop_run (loop=0x8150b70) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3297 #35 0x002d1f95 in gtk_main () at /build/buildd/gtk+3.0-3.2.0/./gtk/gtkmain.c:1367 #36 0x0804b6db in main ()