It's called a delayed ban.
As of now (from what I know) nothing yet.Now I'm playing aIW, but is there a Resurgerence map pack out for aIW yet?'
From AlterIW.net:
NTAuthority worked quite hard to push an early release date for the 37a client, so on the 10th of July, 2010, AlterIWNet 1.3.37a will be open for public testing as a beta for the upcoming 371 client.
Changes include an auto updater, a simple connect function and the Resurgence map pack!