Other URL: http://wiki.wikimedia.it/w/index.php?namespace=102&days=30&title=Speciale%3AUltimeModifiche&feed=atom
RC and new pages feeds from the Direttivo: namespace, restricted to members of the board and sysops, are actually visible for everyone, even logged out. http://wiki.wikimedia.it/w/index.php?title=Speciale:Utenti&group=Direttivo
I once found a private page crawled by Google several years ago, this may be the reason.
Currently using: MediaWiki 1.18.1 (from Debian repo), PHP 5.3.3-7+squeeze15, SimpleSecurity 5.0.4.
Yes, I know that the extension is now marked as unstable etc. Seems worth filing anyway. (Added to cc: WMIT board and sysadmin; original extension author; Daniel, who usually manages LockDown extension for WMDE, IIRC.)