sparteye: booted

I've seen "booted" used, but with a different meaning: one is "booted" when a chat-room host deliberately kicks him/her out of the chat room. A "boot" is for a short cooling-off period (allowing re-entry immediately or within a few minutes or an hour); if longer it is a "ban".

This is the usage I've seen in MSN chats; I suspect the terminology may differ elsewhere.