Major Hardcrash something releated to packets?

OS: CentOS 5 2.6.18-194.32.1.el5 x86_64 x86_64 x86_64 GNU/Linux
Bukkit: git-Bukkit-0.0.0-379-g5e434da-b293 (MC: 1.2_01)
Plugins:
BigBrother.jar
BorderGuard.jar
EssentialsBan.jar
EssentialsHelp.jar
EssentialsHome.jar
EssentialsSpawn.jar
EssentialsWarp.jar
HeroChat.jar
MinecartManiaAdminControls.jar
MinecartManiaChestControl.jar
MinecartManiaCore.jar
MinecartManiaSignCommands.jar
MinecartManiaStation.jar
Noon.jar
Permissions.jar
SignLift.jar
Whitelist.jar
WorldEdit.jar
WorldGuard.jar


Issue: Whatever happens below causes a hard lockup of bukkit where I had to ctrl + c out

Code:

java.net.ConnectException: Connection timed out
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:320)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:181)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:163)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:390)
        at java.net.Socket.connect(Socket.java:578)
        at java.net.Socket.connect(Socket.java:527)
        at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
        at sun.net.www.http.HttpClient.openServer(HttpClient.java:384)
        at sun.net.www.http.HttpClient.openServer(HttpClient.java:477)
        at sun.net.www.http.HttpClient.<init>(HttpClient.java:213)
        at sun.net.www.http.HttpClient.New(HttpClient.java:300)
        at sun.net.www.http.HttpClient.New(HttpClient.java:312)
        at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:992)
        at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:928)
        at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:846)
        at sun.net.www.protocol.http.HttpURLConnection.followRedirect(HttpURLConnection.java:2379)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1543)
        at java.net.URL.openStream(URL.java:1035)
        at net.minecraft.server.ThreadLoginVerifier.run(SourceFile:96)
java.net.SocketException: Connection reset
        at java.net.SocketInputStream.read(SocketInputStream.java:189)
        at java.net.SocketInputStream.read(SocketInputStream.java:121)
        at java.net.SocketInputStream.read(SocketInputStream.java:203)
        at java.io.FilterInputStream.read(FilterInputStream.java:83)
        at net.minecraft.server.Packet.b(SourceFile:102)
        at net.minecraft.server.NetworkManager.f(SourceFile:157)
        at net.minecraft.server.NetworkManager.c(SourceFile:15)
        at net.minecraft.server.NetworkReaderThread.run(SourceFile:68)
java.net.SocketException: Connection reset
        at java.net.SocketInputStream.read(SocketInputStream.java:189)
        at java.net.SocketInputStream.read(SocketInputStream.java:121)
        at java.net.SocketInputStream.read(SocketInputStream.java:203)
        at java.io.FilterInputStream.read(FilterInputStream.java:83)
        at net.minecraft.server.Packet.b(SourceFile:102)
        at net.minecraft.server.NetworkManager.f(SourceFile:157)
        at net.minecraft.server.NetworkManager.c(SourceFile:15)
        at net.minecraft.server.NetworkReaderThread.run(SourceFile:68)
java.net.SocketException: Connection reset
        at java.net.SocketInputStream.read(SocketInputStream.java:189)
        at java.net.SocketInputStream.read(SocketInputStream.java:121)
        at java.net.SocketInputStream.read(SocketInputStream.java:203)
        at java.io.FilterInputStream.read(FilterInputStream.java:83)
        at net.minecraft.server.Packet.b(SourceFile:102)
        at net.minecraft.server.NetworkManager.f(SourceFile:157)
        at net.minecraft.server.NetworkManager.c(SourceFile:15)
        at net.minecraft.server.NetworkReaderThread.run(SourceFile:68)
java.net.SocketException: Connection reset
        at java.net.SocketInputStream.read(SocketInputStream.java:189)
        at java.net.SocketInputStream.read(SocketInputStream.java:121)
        at java.net.SocketInputStream.read(SocketInputStream.java:203)
        at java.io.FilterInputStream.read(FilterInputStream.java:83)
        at net.minecraft.server.Packet.b(SourceFile:102)
        at net.minecraft.server.NetworkManager.f(SourceFile:157)
        at net.minecraft.server.NetworkManager.c(SourceFile:15)
        at net.minecraft.server.NetworkReaderThread.run(SourceFile:68)
java.net.SocketException: Connection reset
        at java.net.SocketInputStream.read(SocketInputStream.java:189)
        at java.net.SocketInputStream.read(SocketInputStream.java:121)
        at java.net.SocketInputStream.read(SocketInputStream.java:203)
        at java.io.FilterInputStream.read(FilterInputStream.java:83)
        at net.minecraft.server.Packet.b(SourceFile:102)
        at net.minecraft.server.NetworkManager.f(SourceFile:157)
        at net.minecraft.server.NetworkManager.c(SourceFile:15)
        at net.minecraft.server.NetworkReaderThread.run(SourceFile:68)

java.net.SocketException: Connection reset
        at java.net.SocketInputStream.read(SocketInputStream.java:189)
        at java.net.SocketInputStream.read(SocketInputStream.java:121)
        at java.net.SocketInputStream.read(SocketInputStream.java:203)
        at java.io.FilterInputStream.read(FilterInputStream.java:83)
        at net.minecraft.server.Packet.b(SourceFile:102)
        at net.minecraft.server.NetworkManager.f(SourceFile:157)
        at net.minecraft.server.NetworkManager.c(SourceFile:15)
        at net.minecraft.server.NetworkReaderThread.run(SourceFile:68)
java.net.SocketException: Connection reset
        at java.net.SocketInputStream.read(SocketInputStream.java:189)
        at java.net.SocketInputStream.read(SocketInputStream.java:121)
        at java.net.SocketInputStream.read(SocketInputStream.java:203)
        at java.io.FilterInputStream.read(FilterInputStream.java:83)
        at net.minecraft.server.Packet.b(SourceFile:102)
        at net.minecraft.server.NetworkManager.f(SourceFile:157)
        at net.minecraft.server.NetworkManager.c(SourceFile:15)
        at net.minecraft.server.NetworkReaderThread.run(SourceFile:68)