Thread:Extension talk:Lockdown/Extension doesn't work with 1.16.0

The extension doesn't work! If i enable Lockdown, I'm able to edit group membership of every user, while not logged in! I can see every special page, also those, usually only visible to sysops! I'm not using any Lockdown-feature. I only enable it in Localsettings with the line require_once("$IP/extensions/Lockdown/Lockdown.php") and all permissions defined anywhere are deactivated. If Lockdown is enabled, lines like $wgGroupPermissions['*']['edit'] = false; are completely ignored, no matter if the line is placed before or after the Lockdown-line. Is this normal behaviour? I'm using MediaWiki 1.16.0. The lines in my LocalSettings.php are:

require_once( "$IP/extensions/Lockdown/Lockdown.php" ); $wgGroupPermissions['*']['edit'] = false;
 * 1) Lockdown
 * 1) Force login to edit

You don't have to use the extension, it's to enough to simply enable it! Any idea?