Cataclysm is there an addon command that turns /who off/on?

[Nasty]

on 1 of my accounts, /who does not work. on the others, it does. i'm thinking perhaps like the achievement thing, it's a blizz addon that was disabled on the account. anyone know if that's true? and what the name of it is?

[Anyone0]

There does not seem to be anything like that. Are you unable to open the who list window or the command itself does not work? You can try deleting Cache folder in your WoW folder. Also did you try turning off all addons to see if any of them cause it?

Edit: who window (friends window) and its functionality is added to the game in a different way, it's not an addon. You should not be able to disable it but some addon or some setting could have broken it.

[Nasty]

i delete cache often :P n tried disabling addons :( and the window opens. but the command dont work, both in chat log and the actual /who window. and only on the 1 account lol

[Anyone0]

It could also be caused by WTF folder. Deleting it would reset your addon settings. Instead of deleting you can move it elsewhere and restore it after checking if that's what causes the problem.