title: how to properly shutdown JVM with akka remote actor
body: <p>I'm trying to shutdown a very simple akka 1.2 remote actors with the Java API like this:</p>
  
  <pre><code>public static void main(String[] args) {
      Actors.remote().start("localhost", 2552);
      Actors.registry().shutdownAll();
  }
  </code></pre>
  
  <p>But the JVM isn't terminated because of some threads still hang out.</p>