[XML-SIG] xml.dom.ext.reader.HtmlLib memory leak?

[xmlsig at codeweld.com]

I've python 2.3.4 on windows xp with PyXML-0.8.3.win32-py2.3

This code leaks substancialy

from xml.dom.ext.reader.HtmlLib import FromHtml
import urllib
from xml.dom import ext
s = urllib.urlopen( 'http://www.google.com' ).read()
while True:
    root = FromHtml( s )
    ext.ReleaseNode( root )

However, this does not ( or only very minor )

from xml.dom.ext.reader.Sax2 import Reader
import urllib
from xml.dom import ext
s = urllib.urlopen( 'http://www.infoworld.com/rss/reviews.xml' ).read()
while True:
    reader = Reader()
    root = reader.fromString( s )
    ext.ReleaseNode( root )

Any suggestions?