Document error

The link http://www.w3.org/TR/xhtml1/DTD/xhtml-special.ent
<http://www.w3.org/TR/xhtml1/DTD/xhtml-special.ent> 
in http://www.w3.org/TR/xhtml1/ <http://www.w3.org/TR/xhtml1/> 
does not parse (I'm using IE5.5)

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