Restarted server- no updates -and console spews errors nonstop

I had to restart my server really quick, so I shut it down with /stop, did my normal thing, and then restarted it like normal, and it began spewing errors at me at the speed of silicon. Most of the errors seem to be just this, repeated over and over and over and over:

Code:

2011-03-30 00:36:08 [SEVERE]     at org.bukkit.craftbukkit.util.LongHashtable.get(LongHashtable.java:34)
2011-03-30 00:36:08 [SEVERE]     at net.minecraft.server.ChunkProviderServer.b(ChunkProviderServer.java:109)
2011-03-30 00:36:08 [SEVERE]     at net.minecraft.server.World.c(World.java:202)
2011-03-30 00:36:08 [SEVERE]     at net.minecraft.server.World.getTypeId(World.java:145)
2011-03-30 00:36:08 [SEVERE]     at net.minecraft.server.EntityItem.g(EntityItem.java:101)
2011-03-30 00:36:08 [SEVERE]     at net.minecraft.server.EntityItem.f_(EntityItem.java:56)
2011-03-30 00:36:08 [SEVERE]     at net.minecraft.server.World.a(World.java:1011)
2011-03-30 00:36:08 [SEVERE]     at net.minecraft.server.WorldServer.a(WorldServer.java:53)
2011-03-30 00:36:08 [SEVERE]     at net.minecraft.server.World.f(World.java:993)
2011-03-30 00:36:08 [SEVERE]     at net.minecraft.server.World.d(World.java:970)
2011-03-30 00:36:08 [SEVERE]     at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:354)
2011-03-30 00:36:08 [SEVERE]     at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:272)
2011-03-30 00:36:08 [SEVERE]     at net.minecraft.server.ThreadServerApplication.run(SourceFile:366)
2011-03-30 00:36:08 [INFO] Chunk (15, -49) stored at  (31, -33)
2011-03-30 00:36:08 [INFO] net.minecraft.server.Chunk
2011-03-30 00:36:08 [SEVERE] java.lang.Throwable

I tried deleting plugins, updating everything (I hadn't updated in a week or so, since stuff tends to break when I do), reverting everything back a version, etc, and nothing helped. The console will start like normal, no problem, and then when certain players (not all of them, mind you, it seems to be totally random) join the server, it spits out this stuff so fast I can't even begin to read it. I'm guessing it's a chunk screwup, one way or another, but I have no idea, and it's really annoying.

P.S.- I should also ad, when the server starts spitting this, nothing in-game breaks, it's just a lot laggier (probably from the error-reporting) and it's near impossible to log on due to connection timeout.
Also, plugin list: WorldEdit, WorldGuard, MagicCarpet, iChat, Permissions, Essentials (Serverlist/Spawn/Base Essentials), TelePlus, MyWarp, MyHome, and MCBans. All of these were current about a week ago, but I dunno what version that means. I'd tell you what version of CB I was using when this started, but I've updated/reverted it since, and the log is so spammed with these errors that it's 150MB in size, and has erased everything prior to these errors.

Help?

 

use chunkster (Chunk Fixer)

 

chunkster is so useful