My article about MediaWiki for the German Linux-Magazin has now been translated into English: http://www.linux-magazine.com/issue/42/Mediawiki.pdf
Keep in mind that the pre-final of this article was finished on Jan 22. I sent them a few updates but it doesn't describe the in-place installer yet. Nevertheless the installation procedure as described should still work.
Regards,
Erik
mediawiki-l@lists.wikimedia.org