Might also try the MagicNoCache extension (http://www.mediawiki.org/wiki/Extension:MagicNoCache). This extension creates a magic word (__NOCACHE__) that disables the cache for that page.
-----Original Message----- From: mediawiki-l-bounces@lists.wikimedia.org [mailto:mediawiki-l-bounces@lists.wikimedia.org] On Behalf Of Benjamin Lees Sent: Tuesday, January 18, 2011 3:58 PM To: MediaWiki announcements and site admin list Subject: Re: [Mediawiki-l] "Category: Noindexed pages" puzzle
Purging doesn't cause any changes: it just forces the system to regenerate some things.[0] I think it's normal for categories to exhibit this "sticky" behavior, and the job queue might also be involved (but I might be misremembering and making the whole thing up).