Help, People get disconnected from this disconnect.spam when they aren't even spamming!

Hello, on my server when someone says something in the chat thats more then 6-7 words long the server kicks them saying disconnect.spam? I have no plugin for this to happen, is there a way to fix this problem?

 

As far as i remember, disconnect.spam does not have much to do with chat spamming.
Dont judge me, im not sure.

 

Can you give us a list of plugins that you use and some more informations about your server? Maybe a console output?

 

Here's My Plugins:
AutoMessage
ButtonWarp
Buycraft
Censorit
ChestShop 3-46
ClearLag
CoreProtect_1.73
Essentials (All of them)
Factions
iConomy
Lockette
Mcjobs
mcMMO
mobarena
Safecreeper
sign rank-1.2.3
Simple autosave
Spleef
TimTheEnchanter
Vault
Timeismoney
worldedit
xauth

The disconnect.spam thing started last night, hasn't happened before, and I havent installed any plugins last night either
Running server on Windows 7, 4GB Ram, Java 7 64BIT, BukkitGUI Version (Console but different)

 

Having the same problem here. All of a sudden people are getting disconnected for spam while they don't spam..

 

It's a vanilla Minecraft check, not sure you can do much about it. Some plugins keeping references to Minecraft internals might cause this, such as BKCommonLib, not sure what it might be in this case (server overloaded?).

 

SwagTasticBiH ggmike Remove BKCommonLib or BeTheMob if you have them. Those are both reported as causing the problem.

The plugin author is recklessly playing with the internals of CraftBukkit without adequately testing, and is breaking your servers. This dangerous development approach and breaking of servers has been ongoing for months. I would suggest finding new plugins to replace those using BKCommonLib.