Timeout on http://www.w3.org/TR/html4/loose.dtd

[Travis Webb via StackOverflow]

I am seeing the following error on my local machine:

java.net.SocketTimeoutException: Timeout while fetching: http://www.w3.org/TR/html4/loose.dtd
    at com.google.appengine.api.urlfetch.URLFetchServiceImpl.fetch(URLFetchServiceImpl.java:51)
    at com.google.apphosting.utils.security.urlfetch.URLFetchServiceStreamHandler$Connection.fetchResponse(URLFetchServiceStreamHandler.java:418)
    at com.google.apphosting.utils.security.urlfetch.URLFetchServiceStreamHandler$Connection.getInputStream(URLFetchServiceStreamHandler.java:297)

I also timeout using wget, both from my local machine and from an EC2 instance. My deployed App Engine project is working, presumably since this file is cached. Does this file no longer exist? What is going on?

UPDATE: When I google for the file, the first result is actually http://www.w3.org/TR/html4/sgml/loosedtd.html. Still confused.

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