1. Linux (Ubuntu Server). 2. x64. 3. Java version: Code: OpenJDK Runtime Environment (IcedTea6 1.9.7) (6b20-1.9.7-0ubuntu1~10.04.1) OpenJDK Client VM (build 19.0-b09, mixed mode, sharing) 4. Craftbukkit #766. 5. Plugins: Code: AntiTower, AuthMe, Bandages, BasicCircuits-beta, Bedheal, BlockOnGlass, BorderGuard, CommandBook, Craftbook, FenceStack, iConomy, IPGet, Lightvote, Lottery, LWC, mcMMO, MinecartMania, MyHome, MyWarp, NoCheat, obuJustShutTheHellUp, Permissions, Plugman, PumpkinDiver, RedstoneChips, SaddleBack, SensorLibrary, SoupBowl, StopFlood, Tombstone, Vanilla, WorldEdit, WorldGuard. 6. Errors that I get, I will describe below. 7. java -Xincgc -Xmx2G -jar craftbukkit.jar nogui The problem is that when the server online order of 15-20 people, the server is operating normally. But when the day starts to go increase the players, about 50 people, the server begins to greatly shall assume about the delay of 20-30 seconds. Most recently, I began to notice that the server is switched off completely without any reason, when online was 47 people. The server uses 2GB of RAM. I have already don `t know how to deal with this problem, people always complain. Processor on the machine is very powerful (Intel @ Xeon). We have a server cost about 20 servers, including (CS, L2, Wow, CSS, BattleField, COD4, Unreal Tournament, Quake, IL2, and many others), none of them does not load as much CPU as it does Minecraft. Please help me solve the problem.