title: jetty throws exception after `java -jar start.jar`
body: <p>I get the following error when I run <code>java -jar start.jar</code>. <code>sudo service jetty start</code> works just fine. What seems to be the problem? There are no webapps deployed, its a new install. I have changed the /etc/default/jetty file to enable the service to start. </p>
  
  <pre><code> wissen12@wissen12:/usr/share/jetty$ java -jar start.jar 
      7 [main] INFO org.mortbay.util.FileResource - Checking Resource aliases
      396 [main] WARN org.mortbay.xml.XmlConfiguration - EXCEPTION 
      java.lang.NoSuchMethodException: class org.mortbay.jetty.Server.setThreadPool(class org.mortbay.thread.QueuedThreadPool)
       at org.mortbay.xml.XmlConfiguration.set(XmlConfiguration.java:417)
       at org.mortbay.xml.XmlConfiguration.configure(XmlConfiguration.java:231)
       at org.mortbay.xml.XmlConfiguration.newInstance(XmlConfiguration.java:198)
       at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:880)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
       at java.lang.reflect.Method.invoke(Method.java:616)
       at org.mortbay.start.Main.invokeMain(Main.java:194)
       at org.mortbay.start.Main.start(Main.java:534)
       at org.mortbay.start.Main.start(Main.java:441)
       at org.mortbay.start.Main.main(Main.java:119)
  </code></pre>
  
  <p>Thanks.</p>