Anti-cheat isn't required.I believe you are referring to the 5 second nag message that is displayed to players who don't use it. Simply wait this out and you'll connect to the game like normal.
[Additionally, I'm told in the next version, we'll be able to nag only the windows folks.
well, if r1ch doesnt find a way to not make me lag when i connectthen i will take my leave of quake2i refuse to play untill he finds another way that doesnt limit me
Can a system be implemented that checks for the anticheat module/client/other stuff and prints out something like this in the chat area: "player connected using: client: r1q2 version ####, vid_ref: r1gl, anticheat: no/yes, etc..."