Hi all.. I have a problem with my login servlet, that extends AdminServlet. When I try to launch LoginServlet, mapped in /login (invocating it from a jsp page), it calls a init() function, which give a Allocate exception

This is the code:

AdminServlet.java

public void init(ServletConfig config) throws ServletException {
 super.init();
 try {
 Debug.print("Dentro la doPost di loginServlet 2");
 Context context = new InitialContext();
 Debug.print("Dentro la doPost di loginServlet 3");
 Object ojbref = context.lookup(AdminControllerHome.JNDI_NAME);
 Debug.print("Dentro la doPost di loginServlet 4");
 AdminControllerHome home = (AdminControllerHome)PortableRemoteObject.narrow(objref, AdminControllerHome.class);
 Debug.print("Dentro la doPost di loginServlet 5");
 ac = home.create();
 out.println("Dentro la doPost di loginServlet 6");
 }catch (Exception e) {
 throw new ServletException(e.getMessage());
 }
 }

******************************************************
15:05:31,762 INFO [MainDeployer] Deployed package: file:/Applications/jboss-3.2.2/server/default/deploy/WebExams.war
15:11:52,410 INFO [STDOUT] Debug: Dentro la doPost di loginServlet 2
15:11:52,412 INFO [STDOUT] Debug: Dentro la doPost di loginServlet 3
15:11:52,412 INFO [STDOUT] Debug: Dentro la doPost di loginServlet 4
15:11:52,456 ERROR [Engine] StandardWrapperValve[LoginServlet]: Allocate exception for servlet LoginServlet
******************************************************

Any helps?!
Thanks!