[pRED*]

I don't really understand that..

Your enforced rates should be set reasonably generous in both directions to allow 56k player and people with awesome cable like connections to have suitable rates. (unless you're one of those server admins who think that 56k players lag other people..). The enforced server rates should prevent people from using ridiculously stupid rates and the rate checker (along with their ping) should help you identfy people using incorrect rates for their connection (whether it be malicious or just ignorant) and tell them what to do to fix it.