problem running example applet

I set up Sun's applet/corba example for HelloWorld.  It runs fine in
appletviewer, but when run from a browser, even from localhost, an
exception get's thrown on the following line:

org.omg.CORBA.Object tobj = ncRef.resolve(path);

This is running Firefox on a machine running Centos 4 using the sdk v.
1.4.2-12, no firewall.  I know there are problems with versino 1.5x,
but this isn't the same problem.  Is this just the way it is, or is
there a work around?

Thanks,

-Charles

code plus output:

import HelloApp.*;

import org.omg.CosNaming.*;
import org.omg.CosNaming.NamingContextPackage.*;
import org.omg.CORBA.*;
import java.awt.Graphics;

public class HelloApplet extends java.applet.Applet
{
  public void init()
  {
    try{

      // Create and initialize the ORB
      // The applet 'this' is passed to make parameters from the  tag
      // available to initialize the ORB
      ORB orb = ORB.init(this, null);

      // Get the root naming context
      org.omg.CORBA.Object objRef =
orb.resolve_initial_references("NameService");
      NamingContext ncRef = NamingContextHelper.narrow(objRef);

      // Resolve the object reference in naming
      NameComponent nc = new NameComponent("Hello", "");
      NameComponent path[] = {nc};

      org.omg.CORBA.Object tobj = ncRef.resolve(path);  // Exception
thrown here!!!

      Hello helloRef = HelloHelper.narrow(tobj);

      // Call the Hello server object and print the results
      //message = helloRef.sayHello();

    } catch(Exception e) {
        System.out.println("HelloApplet exception: " + e);
        e.printStackTrace(System.out);
      }
  }
  String message = " ";

  public void paint(Graphics g)
  {
    g.drawString(message, 25, 50);
  }
}

Output:

HelloApplet exception: org.omg.CORBA.COMM_FAILURE:   vmcid: SUN  minor
code: 201  completed: No
org.omg.CORBA.COMM_FAILURE:   vmcid: SUN  minor code: 201  completed:
No
	at
com.sun.corba.se.internal.iiop.ConnectionTable.getConnection(ConnectionTable.java:173)
	at
com.sun.corba.se.internal.iiop.ConnectionTable.getConnection(ConnectionTable.java:65)
	at
com.sun.corba.se.internal.iiop.GIOPImpl.getConnection(GIOPImpl.java:67)
	at
com.sun.corba.se.internal.corba.ClientDelegate.createRequest(ClientDelegate.java:652)
	at
com.sun.corba.se.internal.corba.ClientDelegate.createRequest(ClientDelegate.java:594)
	at
com.sun.corba.se.internal.corba.ClientDelegate.request(ClientDelegate.java:886)
	at org.omg.CORBA.portable.ObjectImpl._request(ObjectImpl.java:431)
	at
org.omg.CosNaming._NamingContextExtStub.resolve(_NamingContextExtStub.java:397)
	at HelloApplet.init(HelloApplet.java:39)
	at sun.applet.AppletPanel.run(AppletPanel.java:354)
	at java.lang.Thread.run(Thread.java:534)