GRRRR!

yes and my point was it only kicks you if you go faster than a set speed (walk speed in most instances,with some exceptions I.E falling/jumping) if they set their zombe to default speed (walk speed) then it would not kick

i dont think fly modders are the problem,i played a server where fly modding is encouraged,that server was only running 4 GB ram

i think it the the rapidly increasing problem of..neather portals and redstone overdose

pistons require alot to work properly and although notch compressed it as much as possible (or at least i hope he did) they still need the majority of the processing power the server can offer.we either need to limit the amount of pistons..get a ram upgrade..or ban pistons and neather portals..wait cant we disable neather portals?< problem solved :P

I agree with you. If you fly at 1x speed, it causes no lag.
All the new stuff also causes lag, but I haven't seen much lag on the minecraft server recently, so i have to assume that it's under control.