error connecting to "www.w3.org"

The validator seems to try to fetch all URLs it sees.

------------------- snip
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN"
"">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title> a title </title>
</head>
<body><p>hello</p></body>
</html>
----------------- snip

Every once in a while I get the message:

#  Error  Line 106, Column 0: error connecting to "www.w3.org" (Connection refused).

to  me  it seems it tries to fetch 'http://www.w3.org/1999/xhtml' although
this is not needed.

Compare this with:
http://www.w3.org/blog/systeam/2008/02/08/w3c_s_excessive_dtd_traffic

I guess one w3c service is here blocking another one :-|

I removed already the public URI from the RDFa-header and set it to "".

But I cannot remove the xmlns without the doc becoming invalid.

Kind Regards,
Max
--
       voelkel@fzi.de | www.Xam.de
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Received on Tuesday, 2 September 2008 09:23:08 UTC