I need a way to block specific users on Morpheus (those who leach my files and share nothing with the rest of the community) from downloading from me. I've tried 'cancel upload', but that doesn't stop the person from reinitiating the transfer in a matter of seconds. Am I not seeing a really simple way to do this, or would I have to implement a firewall solution?

I use Zone Alarm pro, so I could add a user to the restricted computers list, but how would I easily get someone's IP address?

Any help much appreciated.