The whitelist is very picky. It requires exact capitalization in order to work.
Ex:
Username: Person
If I enter person, then Person gets kicked.
If I enter Person, then Person isn't kicked.
The only reason I say this, is it seems a lot of ingame commands aren't as picky as the whitelist.
Edited 11/29/2010 10:29:01 PM by jonathanbloom: Added to the post.