Error on po.xml. document of XML Schema Part 0: Primer Second Edition ?

Hi,
 
While studying XML Schema Part 0: Primer Second Edition , I came across one line of po.xml document that reads:
 
 
<comment>Hurry, my lawn is going wild<!/comment>
 
This causes the document to fail the well-formdness test on MS IE6.
The error from IE 6 is 
The XML page cannot be displayed 

Cannot view XML input using XSL style sheet. Please correct the error and then click the Refresh <javascript:location.reload()>  button, or try again later. 
________________________________


A name was started with an invalid character. Error processing resource 'file:///C:/Documents and Settings/Administrator/De...

   <comment>Hurry, my lawn is going wild<!/comment>
------------------------------------------^

 
 It was not displayed properly until modified as
 
<comment>Hurry, my lawn is going wild</comment>
 
As the Errata doesnt not show a reference to this , I am reporting this to confirm if that is an error .
 
many thanks
 
Adil Osman Fathelrahman