Thread:Extension talk:Lockdown/Locking down special pages

I was having problem with locking down certain special pages based on user groups with Lockdown on MW 1.17 and 1.16. Here is a solution that doesn't need Lockdown at all, just enter this in your LocalSettings.php:

The example above limits access to the pages listed in the array to the 'sysop' group, by removing the pages from the rest of the groups. The best thing in this solution is that the pages in the array won't even show up on the SpecialPages.

For some reason Random and MostLinkedPages couldn't be disabled this way, any ideas why?