Error in validation of XHTML 1.1

From: Michal Vrábel <michal.htm@gmail.com> Date: Thu, 26 Jul 2007 10:49:54 -0500 Message-ID: <46A79128.303@gmail.com> To: site-comments@w3.org · This archive was generated by hypermail 2.2.0+W3C-0.50 : Tuesday, 8 January 2008 14:23:11 GMT

I don`t know if I writing to good mailbox but I found one very funny 
error in validator.
Try validate example document from 
http://www.w3.org/TR/xhtml11/conformance.html .
So this:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
    "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://www.w3.org/MarkUp/SCHEMA/xhtml11.xsd"
     xml:lang="en" >
  <head>
    <title>Virtual Library</title>
  </head>
  <body>
    <p>Moved to <a href="http://example.org/">example.org</a>.</p>
  </body>
</html>

It is NOT valid??? I don`t understand it .