I went in on a world and placed some water in creative mode, server side console appeared to get stuck in a loop (turns out it wan't an infinite loop - it just took a very long time )
That said though, there is a lot of system println commands with format:
I know it's for debugging but my concern is the impact this may have on log file sizes?
(The NullPointerException on de.kiw.gui.core.Screen.destroy line 244 also seems to stop you using the rp command)