Plugin Problem

I found this error on my console. and causes Moments of lag. Can you help me Please

Code:java

24.04 01:47:21 [Server] INFO Sabiondo: dantex
24.04 01:47:21 [Server] INFO Rey: [Oculto]SuddenWolf
24.04 01:47:21 [Server] INFO Inteligente: snook
24.04 01:47:21 [Server] INFO Iniciado: Bananawdz
24.04 01:47:21 [Server] INFO Inexperto: PuppySky
24.04 01:47:21 [Server] INFO Catador: MrCubito03
24.04 01:47:21 [Server] INFO Amateur: hery
24.04 01:47:21 [Server] INFO Hay 6 jugadores de un maximo de 1 jugadores online.
24.04 01:47:15 [Server] INFO » snook entró «
24.04 01:47:15 [Server] INFO [DBG] engaging passives
24.04 01:47:15 [Multicraft] snook ran command Message of the Day
24.04 01:47:15 [Connect] User snook, IP 189.186.31.35
24.04 01:46:30 [Server] INFO World saved.
24.04 01:46:30 [Server] INFO CONSOLE: Forcing save..
24.04 01:46:30 [Server] INFO CONSOLE: Enabled level saving..
24.04 01:46:30 [Multicraft] Skipped 24 lines due to rate limit (30/s)
24.04 01:46:30 [Multicraft] Auto-saving world...
24.04 01:46:28 [Server] WARN at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
24.04 01:46:28 [Server] WARN at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:318)
24.04 01:46:28 [Server] WARN at java.lang.reflect.Method.invoke(Method.java:606)
24.04 01:46:28 [Server] WARN at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
24.04 01:46:28 [Server] WARN at sun.reflect.GeneratedMethodAccessor423.invoke(Unknown Source)
24.04 01:46:28 [Server] WARN at com.certox.Core.onPlayerLoginEvent(Core.java:242)
24.04 01:46:28 [Server] WARN at com.certox.Core.isProxy(Core.java:141)
24.04 01:46:28 [Server] WARN at java.net.URL.openStream(URL.java:1037)
24.04 01:46:28 [Server] WARN at sun.net.[url="http://www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1300)"]www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1300)[/url]
24.04 01:46:28 [Server] WARN at sun.net.[url="http://www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:850)"]www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:850)[/url]
24.04 01:46:28 [Server] WARN at sun.net.[url="http://www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:932)"]www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:932)[/url]
24.04 01:46:28 [Server] WARN at sun.net.[url="http://www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:996)"]www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:996)[/url]
24.04 01:46:28 [Server] WARN at sun.net.[url="http://www.http.HttpClient.New(HttpClient.java:326)"]www.http.HttpClient.New(HttpClient.java:326)[/url]
24.04 01:46:28 [Server] WARN at sun.net.[url="http://www.http.HttpClient.New(HttpClient.java:308)"]www.http.HttpClient.New(HttpClient.java:308)[/url]
24.04 01:46:28 [Server] WARN at sun.net.[url="http://www.http.HttpClient.<init>(HttpClient.java:211)"]www.http.HttpClient.<init>(HttpClient.java:211)[/url]
24.04 01:46:28 [Server] WARN at sun.net.[url="http://www.http.HttpClient.openServer(HttpClient.java:527)"]www.http.HttpClient.openServer(HttpClient.java:527)[/url]
24.04 01:46:28 [Server] WARN at sun.net.[url="http://www.http.HttpClient.openServer(HttpClient.java:432)"]www.http.HttpClient.openServer(HttpClient.java:432)[/url]
24.04 01:46:28 [Server] WARN at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
24.04 01:46:28 [Server] WARN at java.net.Socket.connect(Socket.java:528)
24.04 01:46:28 [Server] WARN at java.net.Socket.connect(Socket.java:579)
24.04 01:46:28 [Server] WARN at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
24.04 01:46:28 [Server] WARN at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
24.04 01:46:28 [Server] WARN at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
24.04 01:46:28 [Server] WARN at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
24.04 01:46:28 [Server] WARN at java.net.PlainSocketImpl.socketConnect(Native Method)
24.04 01:46:28 [Server] WARN What follows is the stack trace of the main thread
24.04 01:46:28 [Server] WARN Probable Plugin cause: 'AntiJoinBot'
24.04 01:46:28 [Server] WARN The main thread failed to respond after 10 seconds
24.04 01:46:28 [Server] INFO [DBG] engaging passives
24.04 01:46:28 [Multicraft] snook ran command Message of the Day
24.04 01:46:28 [Connect] User snook, IP 189.186.31.35
24.04 01:46:24 [Server] INFO GroupManager - INFO -  Data files refreshed.
24.04 01:46:11 [Server] WARN Invalid material: COAL_ORE

Plugin List:



Host:

 

Remove anti join bot, it seems to be the plugin causing the problem

 

Locked. We do not support servers with authentication disabled. (See: http://forums.bukkit.org/threads/illegal-characters-in-chat.261290/ )