Consider the following light Java code:

import com.sun.net.httpserver.HttpContext;
import com.sun.net.httpserver.HttpServer;
import java.net.InetSocketAddress;

public class Test {

   public static void main(String[] args) throws Exception {
       InetSocketAddress inetAddress = new InetSocketAddress("localhost", 65436);
       while (true) {
           HttpServer server = HttpServer.create(inetAddress,0);
           HttpContext context = server.createContext("/test");
           server.start();
           // Uncomment the following line and the test case will not fail
           //Thread.sleep(100);
           server.removeContext(context);
           server.stop(0);
       }
   }
}

When you run it (with JAX-WS release 2.1.3-20071106 + JDK 5 on a four way Sparc)
you go out of resources:

Exception in thread "main" java.io.IOException: Too many open files
        at sun.nio.ch.IOUtil.initPipe(Native Method)
        at sun.nio.ch.DevPollSelectorImpl.<init>(DevPollSelectorImpl.java:51)
        at
sun.nio.ch.DevPollSelectorProvider.openSelector(DevPollSelectorProvider.java:18)
        at java.nio.channels.Selector.open(Selector.java:209)
        at sun.net.httpserver.ServerImpl.<init>(ServerImpl.java:73)
        at sun.net.httpserver.HttpServerImpl.<init>(HttpServerImpl.java:32)
        at
sun.net.httpserver.DefaultHttpServerProvider.createHttpServer(DefaultHttpServerProvider.java:17)
        at com.sun.net.httpserver.HttpServer.create(HttpServer.java:111)
        at Test.main(Test.java:13)

If you uncomment the 100 milliseconds sleep in the Java code, the test behaves well.