Well just read this as well
So basically once again the cheaters outlasted or outwhitted the good intention of others to help stop this problem. I was actually planning to install this plugin smacbans since i was told about this today. But now that i see this is way behind and has fallen into the dusty corner i wont bother.
Maybe one day some big money will be invested in this sort of thing and it will last longer than a few years and keep up with the cheaters once and for all.