Parsing XML documents behind a firewall; java makes a connect to the actual DTD?

Xerces or some seems to make a request to the DTD to use while
validating a XML document.

This is a major bug that even the w3c is complaining about.

Does anyone know how to turn this. Off. I want to do it through some
java setting as opposed to visiting each individual file.?

This is essentially the code:

    public static Object [] validateXML(final String url, final String
http_data) {
        try {
            if ((http_data == null) || (http_data.length() == 0)) {
                throw new RuntimeException("Invalid HTTP data argument");
            }

            final DOMParser parser = new DOMParser();
            parser.setFeature("http://xml.org/sax/features/validation", true);
            parser.setProperty("http://apache.org/xml/properties/schema/
external-noNamespaceSchemaLocation",
                            "memory.xsd");
            LoadTestXMLDefaultHandler errors = new LoadTestXMLDefaultHandler();
            parser.setErrorHandler(errors);
            parser.parse(new InputSource(new StringReader(http_data)));
            Object tuple [] = { new Boolean(true), "" };
            return tuple;
        } catch (Exception e) {
            final StringBuffer err_msg = new StringBuffer();
            err_msg.append("ERR: validateXML() - Error validating HTTP
content.");
            err_msg.append("ERR: url=" + url + " error=" + e.getMessage());
            Object tuple [] = { new Boolean(false), err_msg.toString() };
            return tuple;
        }
    }