2012-08-16 13:28:07 [SEVERE] java.util.ConcurrentModificationException
2012-08-16 13:28:07 [SEVERE]    at java.util.LinkedList$ListItr.checkForComodification(Unknown Source)
2012-08-16 13:28:07 [SEVERE]    at java.util.LinkedList$ListItr.next(Unknown Source)
2012-08-16 13:28:07 [SEVERE]    at net.minecraft.server.EntityPlayer.h_(EntityPlayer.java:194)
2012-08-16 13:28:07 [SEVERE]    at net.minecraft.server.World.entityJoinedWorld(World.java:1239)
2012-08-16 13:28:07 [SEVERE]    at net.minecraft.server.WorldServer.entityJoinedWorld(WorldServer.java:498)
2012-08-16 13:28:07 [SEVERE]    at net.minecraft.server.World.playerJoinedWorld(World.java:1221)
2012-08-16 13:28:07 [SEVERE]    at net.minecraft.server.World.tickEntities(World.java:1119)
2012-08-16 13:28:07 [SEVERE]    at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:565)
2012-08-16 13:28:07 [SEVERE]    at net.minecraft.server.DedicatedServer.q(DedicatedServer.java:212)
2012-08-16 13:28:07 [SEVERE]    at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:474)
2012-08-16 13:28:07 [SEVERE]    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:406)
2012-08-16 13:28:07 [SEVERE]    at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)
2012-08-16 13:28:07 [SEVERE] Encountered an unexpected exception ConcurrentModificationException
java.util.ConcurrentModificationException
        at java.util.LinkedList$ListItr.checkForComodification(Unknown Source)
        at java.util.LinkedList$ListItr.next(Unknown Source)
        at net.minecraft.server.EntityPlayer.h_(EntityPlayer.java:194)
        at net.minecraft.server.World.entityJoinedWorld(World.java:1239)
        at net.minecraft.server.EntityPlayer.h_(EntityPlayer.java:194)
        at net.minecraft.server.World.entityJoinedWorld(World.java:1239)
        at net.minecraft.server.WorldServer.entityJoinedWorld(WorldServer.java:498)
        at net.minecraft.server.World.playerJoinedWorld(World.java:1221)
        at net.minecraft.server.World.tickEntities(World.java:1119)
        at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:565)
        at net.minecraft.server.DedicatedServer.q(DedicatedServer.java:212)
        at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:474)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:406)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)
2012-08-16 13:28:07 [SEVERE] This crash report has been saved to: /home/minecraft/./crash-reports/crash-2012-08-16_13.28.07-server.txt
2012-08-16 13:28:22 [WARNING] [NoLagg TLN] The main thread failed to respond after 10 seconds
2012-08-16 13:28:22 [WARNING] [NoLagg TLN] What follows is the stack trace of the main thread
2012-08-16 13:28:22 [WARNING] [NoLagg TLN] This stack trace will be further refined as long as the thread is stuck
2012-08-16 13:28:22 [INFO]     at java.lang.Thread.sleep(Native Method)
2012-08-16 13:28:22 [INFO]     at net.minecraft.server.DedicatedServer.a(DedicatedServer.java:195)
2012-08-16 13:28:22 [INFO]     at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:434)
2012-08-16 13:28:22 [INFO]     at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)
2012-08-16 13:28:32 [WARNING] [NoLagg TLN] The main thread is still stuck, updated stack trace is:
2012-08-16 13:28:32 [INFO]     at java.lang.Thread.sleep(Native Method)
2012-08-16 13:28:32 [INFO]     at net.minecraft.server.DedicatedServer.a(DedicatedServer.java:195)
2012-08-16 13:28:32 [INFO]     at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:434)
2012-08-16 13:28:43 [INFO] Connection reset
2012-08-16 13:29:17 [INFO] Connection reset
2012-08-16 13:30:06 [INFO] Read timed out
2012-08-16 13:30:51 [INFO] Read timed out