@Override
 public void onStart() {
   super.onStart();
   final ContentResolver resolver = getContentResolver();
   resolver.registerContentObserver(Accounts.CONTENT_URI, true, mReloadContentObserver);
   final Bus bus = TwittnukerApplication.getInstance(getActivity()).getMessageBus();
   bus.register(this);
   final MessageEntriesAdapter adapter = getAdapter();
   adapter.updateReadState();
   updateRefreshState();
 }