[sebxx4]

Some players uses steam_id changers with changing IP, sometimes I can't detect it, especially if he's using some nonpublic program or something new. Config ban is unreliable too bacause it can by bypassed by setting config file as read-only or reinstalling CS. Checking machine ID (or some other rarey changing parameter) could be great to ban those people. Even one of them can make real problem for other players if he's motivated...