Setting maxEntries too high causes a SAXParseException

When I configure maxEntries == 500 and point the jira-report at http://jira.codehaus.org/browse/MNG, it fails to parse the resulting XML, saying it has exceeded 64,000 entity expansions (something to do with SAX). The error is:

org.xml.sax.SAXParseException: Parser has reached the entity expansion limit "64,000" set by the Application.

When I wget the URL that the changes plugin has generated:

http://jira.codehaus.org/secure/IssueNavigator.jspa?view=rss&pid=10500&sorter/field=created&sorter/order=DESC&sorter/field=priority&sorter/order=DESC&tempMax=500&reset=true&decorator=none

it shows results from XWIRE and XULUX...clearly not limited to MNG.