Frederik Dohr wrote:
If you only want to restrict by namespace, it's much easier. You could code an an extension for it or even use the builtin $wgNamespaceProtection (including everything but Talk namespace).
Hmm, the manual page* says $wgNamespaceProtection was introduced in v1.10, which has not been released yet... !? Sounds interesting though!
It's on SVN. You can download a full install from there http://www.mediawiki.org/wiki/Download_from_SVN
You can also patch your current version. $wgNamespaceProtection was included in r19110 http://svn.wikimedia.org/viewvc/mediawiki?view=rev&revision=19110
Another posible solution would be using the Talkright extension http://meta.wikimedia.org/wiki/Talkright_extension