I got the vim's news.rss20.xml file.. and tested with xmlparse.
kmos@bash:~/public_html$ xmlparse news.rss20.xml
news.rss20.xml:2: validity error : Validation failed: no DTD found !
<rss xmlns:date="http://exslt.org/dates-and-times"; version="2.0"><channel><title
^
2008-01-29 13:26:37.067 xmlparse[14799] Document is rss
Only this.. noything more.
--
Marco Rodrigues
http://Marco.Tondela.org