Problem with end.of.stream

This is my problem but is only with 1 player the others can play normal.

PHP:

09:18 PM [SEVERE] java.net.SocketException: Connection reset by peer: socket write error
09:18 PM [SEVERE] at java.net.SocketOutputStream.socketWrite0(Native Method)
09:18 PM [SEVERE] at java.net.SocketOutputStream.socketWrite(Unknown Source)
09:18 PM [INFO] Martin099ful1 lost connection: disconnect.endOfStream
09:18 PM [INFO] [Backup] Scheduled last backup for 40 minutes;
09:18 PM [SEVERE] at java.net.SocketOutputStream.write(Unknown Source)
09:18 PM [SEVERE] at java.io.BufferedOutputStream.flushBuffer(Unknown Source)
09:18 PM [SEVERE] at java.io.BufferedOutputStream.flush(Unknown Source)
09:18 PM [SEVERE] at java.io.DataOutputStream.flush(Unknown Source)
09:18 PM [SEVERE] at net.minecraft.server.NetworkWriterThread.run(SourceFile:104)
09:18 PM [SEVERE] java.net.SocketException: Connection reset by peer: socket write error
09:18 PM [SEVERE] at java.net.SocketOutputStream.socketWrite0(Native Method)
09:18 PM [SEVERE] at java.net.SocketOutputStream.socketWrite(Unknown Source)
09:18 PM [SEVERE] at java.net.SocketOutputStream.write(Unknown Source)
09:18 PM [SEVERE] at java.io.BufferedOutputStream.flushBuffer(Unknown Source)
09:18 PM [SEVERE] at java.io.BufferedOutputStream.flush(Unknown Source)
09:18 PM [SEVERE] at java.io.DataOutputStream.flush(Unknown Source)
09:18 PM [SEVERE] at net.minecraft.server.NetworkWriterThread.run(SourceFile:104)

Down is the log.