Server Chunk Error

Whenever I start up my server everything runs fine. But whenever someone joins the server my console gets spammed by this message:

2011-09-05 17:39:43 [INFO] Chunk file at 9,1 is in the wrong location; relocating. (Expected 9, 1, got 11, 4)
2011-09-05 17:39:43 [INFO] Chunk (11, 4) stored at (9, 1)
2011-09-05 17:39:43 [SEVERE] java.lang.Throwable
2011-09-05 17:39:43 [SEVERE] at org.bukkit.craftbukkit.util.LongHashtable.put(LongHashtable.java:19)
2011-09-05 17:39:43 [SEVERE] at net.minecraft.server.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:75)
2011-09-05 17:39:43 [SEVERE] at net.minecraft.server.PlayerInstance.<init>(PlayerInstance.java:31)
2011-09-05 17:39:43 [SEVERE] at net.minecraft.server.PlayerManager.a(PlayerManager.java:45)
2011-09-05 17:39:43 [SEVERE] at net.minecraft.server.PlayerManager.addPlayer(PlayerManager.java:84)
2011-09-05 17:39:43 [SEVERE] at net.minecraft.server.ServerConfigurationManager.c(ServerConfigurationManager.java:134)
2011-09-05 17:39:43 [SEVERE] at net.minecraft.server.NetLoginHandler.b(NetLoginHandler.java:97)
2011-09-05 17:39:43 [SEVERE] at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:74)
2011-09-05 17:39:43 [SEVERE] at net.minecraft.server.Packet1Login.a(SourceFile:43)
2011-09-05 17:39:43 [SEVERE] at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
2011-09-05 17:39:43 [SEVERE] at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:40)
2011-09-05 17:39:43 [SEVERE] at net.minecraft.server.NetworkListenThread.a(SourceFile:91)
2011-09-05 17:39:43 [SEVERE] at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:454)
2011-09-05 17:39:43 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:363)
2011-09-05 17:39:43 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)

After about 5 minutes the server.log file is over 200mb. Can anyone identify what is happening?

I'm running Windows 7, on CraftBukkit 1060, i use Hamachi and my java version is 1.7.0

I only have a few plugins installed: Capture the points, Essentials - Full, Spout, NetherFire, VanishNoPacket, nSpleef, MobArena, LWC and HeatlhBar.
Also it only happens on one map. But i don't want to start again because it is my main server.

This problem only started today, and all i did was start the server.

 

What you need is chunkster.. it basically helps you fix up all those bad chunks, heres the thread for more info.

http://forums.bukkit.org/threads/admin-chunkster.8186/

Goodluck!

 

Thanks, trying it now.

EDIT: Tried it, didn't do anything. Got anything else?

 

same here