Hey I got a little Bukkit Server on a localhost here (4GB RAM, intel8500 DualCore CPU and a HDD). I use bukkit 1.2.5-R4.0 and Worldedit and Commandbook 2.0 and the performance of my server is horrible and I think its getting worse. Last time, cutting 100k blocks made it crash, now i wanted to create a cyl with 14k blocks, crash again... i tried Java 6 and 7, even the newest bukkit version... no improvements. I think its software based. Sometimes my CPU goes to 100%, but why a crash? I have time, let it render 30 secs... fuck the crashing! Logs: Code: 2012-06-24 19:14:29 [WARNING] Can't keep up! Did the system time change, or is the server overloaded? 2012-06-24 19:15:41 [INFO] XYZ lost connection: disconnect.endOfStream This sucks I tried to give more RAM to the Server (btw why must i do this manually? server, take what is available!) Any ideas? I am not thinking about investing 400€ just for a little MC... Thank you.