Hi,
Just a sugestion.
Downloading the last version of MediaWiki seems to take ages ATM. Maybe servers are overloaded. And not mirror is offered.
$ wget http://download.wikimedia.org/mediawiki/1.16/mediawiki-1.16.0.tar.gz this takes ages
I have managed to download with this: $ svn checkout http://svn.wikimedia.org/svnroot/mediawiki/branches/REL1_16/phase3
But I suppose is not the prefered method.
I may be a good idea to provide mirrors for the mediawiki-1.16.0.tar.gz file.