1) Where is the _select_ of Your Account AND in phpbb which i'm thinking to make it "disabled"? (because even the users have one option they can damage my theme)
Are there other places where an user have the option to change the theme?
2) i'm thinking to UPDATE the field 'theme' from nuke_users with '' AND change the cookie name to solve the problem that the theme is changed by users' cookie.

And with this 2 actions i'm able to keep the field theme of users UNTOUCHED 100% :?: