I deactivate (i supose) all users privileges except "read" (with "false" indication). I eliminate "autoconfirmed" in the $wgRestrictionLevels, and $wgImplicitGroups... but it continues the massive editing os spammers (http://instantaneo.es/wiki/index.php?title=Especial:P%C3%A0gines_noves) even of the non-users. I modified DefaultSettings and LocalSettings, but.... no longer that I can more do!
MediaWiki 1.6, Apache 2.2.22 PHP 5.2.17 MySQL 5.1.66-cll