The following trivial applet fails to display the label:

AppletTest.html:
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<applet codebase="." code="AppletTest" width="400" height="200"></applet>
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AppletTest.java:
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import java.applet.*;
import java.awt.*;

public class AppletTest extends Applet {
    public void init() {
        setLayout(new BorderLayout());
        add(new Label("test"), BorderLayout.CENTER);
    }
}

I've tried many variants such as

    add("Center", new Label("test"));

and not setting the layout and using the default layout with

    add(new Label("test"));

None of them display. They all work if I use JDK 1.5.

I also tried with the (not yet released) JDK 1.6.0_02, which also fails.

I'm using firefox with the Java plugin (version verified using about:plugins).