Wikimedia Bugzilla is closed!

Hello.
I downloaded the it.wikibooks database from http://download.wikimedia.org/itwikibooks/20080104/. More precisely, I downloaded the "pages-meta-current.xml.bz2" dump.

I then created this list from the database dump: http://it.wikibooks.org/wiki/Wikibooks:Elenchi_generati_offline/Libri
Since this list should contain all the books in our project, I discarded the redirects. Here is the query I used:

SELECT CONCAT( '# [[', page_title, ']]')
FROM `page`
WHERE `page_is_redirect` LIKE 0
AND `page_namespace` LIKE 0
AND `page_title` NOT REGEXP '[:/]'
ORDER BY `page_title`;

However, in the list there is "Main_Page", which is a redirect (see http://it.wikibooks.org/w/index.php?title=Main_Page&redirect=no).
I looked in my database ("page" table) with phpMyAdmin and noted that the "page_is_redirect" field for "Main_Page" is 0.
MediaWiki doesn't recognize "Main_Page" as a redirect, but that IS a redirect!

This error occurred also in the previous lists.

Regards
Pietrodn