Our MediaWiki installation is auto-linking the word "files". So

Here are some files: a, b, c

would result in the word "files" being linked to http://ourhost/mediawiki/files.

Why is that happening and how do I make it stop? I can use the nowiki tag, but perhaps it does not surprise you that the word "files" appears often, and it is aggravating to use that tag all the time.

Here is some info on our MediaWiki installation from Special:Version. Yes, it's old.

Installed software

Product Version

MediaWiki 1.16.5

PHP 5.2.14-pl0-gentoo (apache2handler)

MySQL 5.0.84

Installed extensions

Parser hooks GoogleDocs4MW (Version 1.1) Adds tag for Google Docs' spreadsheets display Jack Phoenix SyntaxHighlight (Version 1.0.8.6) Provides syntax highlighting using GeSHi Highlighter Brion Vibber, Tim Starling, Rob Church and Niklas Laxström

WebServiceSequenceDiagram(Version 1.0) Render inline sequence diagrams using websequencediagrams.com Eddie Olsson Other MWSearch MWSearch plugin Kate Turner and Brion Vibber

Extension functions efLucenePrefixSetup

Parser extension tags gallery, googlespreadsheet, html, nowiki, pre, sequencediagram, source and syntaxhighlight

Parser function hooks anchorencode, basepagename, basepagenamee, defaultsort, displaytitle, filepath, formatdate, formatnum, fullpagename, fullpagenamee, fullurl, fullurle, gender, grammar, int, language, lc, lcfirst, localurl, localurle, namespace, namespacee, ns, nse, numberingroup, numberofactiveusers, numberofadmins, numberofarticles, numberofedits, numberoffiles, numberofpages, numberofusers, numberofviews, padleft, padright, pagename, pagenamee, pagesincategory, pagesize, plural, protectionlevel, special, subjectpagename, subjectpagenamee, subjectspace, subjectspacee, subpagename, subpagenamee, tag, talkpagename, talkpagenamee, talkspace, talkspacee, uc, ucfirst and urlencode