Whats This Error??

When ever people join my server they just crash or get kicked and this error shows on the console any ideas??

Code:

2011-01-24 18:09:17 [INFO] Exasperated [/109.77.138.178:3604] logged in with ent
ity id 2466
Player count: 2
java.net.SocketException: Connection reset
        at java.net.SocketInputStream.read(Unknown Source)
        at java.net.SocketInputStream.read(Unknown Source)
        at java.io.FilterInputStream.read(Unknown Source)
        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)
2011-01-24 18:09:33 [INFO] Exasperated lost connection: disconnect.genericReason

 

ive seen other posts of this but nobody replys but the error is still happening and
kicking the people in my server any way i can fix??