Config.php Cache Problem

[topianno]

Hello,
I am trying to make some users "super administrators" by adding their user ID's to the config.php file in the /includes folder. I have done this before and it worked fine. However, I've added a couple new user ID's but it won't work. It seems like the config.php is cached or something, because if I remove a user ID that works as a super administrator I can still login with super administrator privileges even though I removed the user ID. The system should disable a user ID that I remove.

Any ideas? Im stumped...

Thanks for anyone that can help.
-Gabe

This is my code below:

$config['SpecialUsers']['superadministrators'] = '1,2,5,11,10,18';