< 4.8G saper
now:
238.8M saper
Btw. I have an automatically updated copy of Mediawiki SVN repository here, so you can save space if you have your own copy.
/mnt/user-store/mediawiki/
(the copy is being pulled via hgsvn into Mercurial, so Mercurial commands operate here on revisions - see hginit.com for introduction).
//Marcin