MSN Nickname Problem

I cant seem to be able to change my MSN Nickname (the one that appears on the MSN Groups and Chats). I edit my profile and change the nickname, but though the nickname appears to be changed (in the profile), when I join a group or am chattin in a chat, my old MSN Nickname still appears...

MSN Contacts window -> Tools menu -> Options -> Type your name as you want others to see it.

You don't have the stuff-Ng plugin which keeps your contact name and chat only name seprate either have you?