I have read through a discussion regarding the "key code in use" issue. I have read through the options of rebooting the computer and waiting neither one of those seem to be working out to well for me. My key code is not in use although the game still acts as if I'm logged into a server after I got disconnected.

I Have The Same Problem And There Is No Way I Can Join To Any Server Whit Out The "key Code In Use" Showing Up Again.i Only Managed To Join A Server Once But After A Short Period It Kicked Me. Can Any Body Help Please

Both of you should try updating punkbuster that might help