Here is the crash report. I don't know why but its the 4th time today I have 4GB of Ram and only had 4 people on at the time. Code: ---- Minecraft Crash Report ---- // Oh - I know what I did wrong! Time: 10/6/13 4:35 PM Description: Exception in server tick loop java.lang.OutOfMemoryError: unable to create new native thread at java.lang.Thread.start0(Native Method) at java.lang.Thread.start(Unknown Source) at net.minecraft.server.v1_6_R3.NetworkManager.d(NetworkManager.java:315) at net.minecraft.server.v1_6_R3.PendingConnection.a(PendingConnection.java:179) at net.minecraft.server.v1_6_R3.Packet254GetInfo.handle(SourceFile:72) at net.minecraft.server.v1_6_R3.NetworkManager.b(NetworkManager.java:296) at net.minecraft.server.v1_6_R3.PendingConnection.d(PendingConnection.java:49) at net.minecraft.server.v1_6_R3.DedicatedServerConnectionThread.a(DedicatedServerConnectionThread.java:41) at net.minecraft.server.v1_6_R3.DedicatedServerConnection.b(SourceFile:29) at net.minecraft.server.v1_6_R3.MinecraftServer.t(MinecraftServer.java:592) at net.minecraft.server.v1_6_R3.DedicatedServer.t(DedicatedServer.java:227) at net.minecraft.server.v1_6_R3.MinecraftServer.s(MinecraftServer.java:488) at net.minecraft.server.v1_6_R3.MinecraftServer.run(MinecraftServer.java:421) at net.minecraft.server.v1_6_R3.ThreadServerApplication.run(SourceFile:583)