Solved [WARNING] Failed to handle packet for

Code:

[/84.244.117.3:51139]: Internal server error
2013-03-22 20:58:57 [WARNING] Failed to handle packet for JasonB [/84.244.117.3:51139]: java.lang.NullPointerException
java.lang.NullPointerException
    at net.minecraft.server.v1_5_R2.PlayerList.attemptLogin(PlayerList.java:293)
    at net.minecraft.server.v1_5_R2.PendingConnection.d(PendingConnection.java:120)
    at net.minecraft.server.v1_5_R2.PendingConnection.c(PendingConnection.java:44)
    at net.minecraft.server.v1_5_R2.DedicatedServerConnectionThread.a(DedicatedServerConnectionThread.java:41)
    at net.minecraft.server.v1_5_R2.DedicatedServerConnection.b(SourceFile:29)
    at net.minecraft.server.v1_5_R2.MinecraftServer.r(MinecraftServer.java:580)
    at net.minecraft.server.v1_5_R2.DedicatedServer.r(DedicatedServer.java:225)
    at net.minecraft.server.v1_5_R2.MinecraftServer.q(MinecraftServer.java:476)
    at net.minecraft.server.v1_5_R2.MinecraftServer.run(MinecraftServer.java:409)
    at net.minecraft.server.v1_5_R2.ThreadServerApplication.run(SourceFile:573)

Hi, does anyone know what is wrong? hangs the whole server every time..

Plugins:
GroupManager, WorldEdit, NoCheatPlus, SurvivalGames, Permissions, Vault, Multiverse-Core, LoginSecurity, MobArena, dynmap, Essentials, WorldBorder, EssentialsProtect, EssentialsSpawn, VanishNoPacket, AntiXRay, GameparkMessages, EssentialsChat, EssentialsAntiBuild, Residence, ChestShop

Bukkit: 1.5.1-R0.1-SNAPSHOT

 

Its a dev build what do you expect?

 

I'm more interested if it's bukkit, plugin or should I look somewhere else bug..
if is problem bukkit so it is not a problem

 

Its bukkit itselft.

 

ok thank you very much

 

No problem

 

I have the same problem. My plugins are:
essentials, banvote, commandsigns, headgrabber, servermessage, SMv2.4.1, worldportal