Hi EvilSeph, I fired up builds #557 and #558 on my test server (i make a full backup of the bukkit install and world, identical to the one I gave you a copy of, then run it on different hardware so I can test config and plugin changes). I haven't tested if the lag is present, but I suspect it will be. In fact, I have a strong suspicion I know the cause too. As you saw for yourself, spawn-animals=false in server.properties. Well, have a look at this screenshot: Squid-Ho! Hundreds of the blighters, and they are at the bottom of every such depression in the bottom of every major body of water. I can see two possibilities here: 1) They are still spawning like hell, and bogging down the server. (bukkit bug) 2) They *were* spawning like hell, and bukkit isn't eliminating them when starting with animals set to false. (so bukkit bug still). If this is the case, does anyone know a good plugin for mass genocide of a mob type? Evilseph, let us know if you would like an updated copy of my world to confirm this for yourself.