Hi,
with mediawiki2latex it is now possible to export content from MediaWiki to a variety of formats.
Online conversion is provided under the following URL:
http://mediawiki2latex.wmflabs.org/
Available output formats are PDF, LaTeX, EPUB, ODT and HTML.
The source code is available under GPL.
There is a Debian package. As well as GUI in Debian.
Also binary command line version for Windows is available.
More details and installation instructions are given on the project homepage:
https://de.wikibooks.org/wiki/Benutzer:Dirk_Huenniger/wb2pdf
Yours Dirk