HTTP connection doesn't work on digg?

I'm trying to familiarize myself with the method of connecting to web
sites with Java. I've written a simple program to connect to a page
at a given URL, but I've noticed it behaves differently for different
sites.

Here's some code which I have stripped of most of the extra stuff just
to highlight the problem:

----

    public void connTest (String addr)
    {
        try {
            System.out.println("Trying to connect to "+addr);
            URL u = new URL(addr);
            HttpURLConnection conn = (HttpURLConnection) u.openConnection();
            conn.connect();
            InputStream is = conn.getInputStream();
            System.out.println("Input stream is open...");
            is.close();
            conn.disconnect();
        } catch (Exception e) {
            System.out.println ("Something's wrong");
        }
    }

----

Then to invoke it, I try:

    connTest("http://www.google.com");
    connTest("http://www.digg.com");

Here's the output:

Trying to connect to http://www.google.com
Input stream is open...
Trying to connect to http://www.digg.com

The first method call takes a few seconds, but then gives me what I
asked for (and then I can go ahead and print out all the html with a
reader). The second method call just hangs. As soon as it hits the
line "InputStream is = conn.getInputStream();" it's stuck. The same
thing happens if I try to get any other property, such as
getResponseCode.

I've tried this with several web sites and Digg is the only widely-
used site that gives me this problem. But I can open it in a browser
just fine. Am I doing something wrong?

--
Russell Glasser
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