Lag issue found and fixed!

The lag issue should be resolved now. We're at a steady 20 (which is max) ticks per second.

If you are curious about what was wrong, I'll explain. The latest 1.3.1 recommended Bukkit build has a pretty bad lag issue that has to do with chunks and saving (the issue we were having). So yesterday I updated Bukkit to a dev build which fixed that issue. But for some reason, last night, our installed Bukkit build got reverted back to the laggy build. I just happened to check our /version in-game which tipped me off. I re-installed the new build and everything is sailing smooth.