Minecraft: Ayudaa¡¡ failed to bind to port

Pues me cree un server (sinhamachi) y cuando lo ejecuto me sale esto  :


INFO] Starting minecraft server version 1.5.2
 [WARNING] To start the server with more ram, launch it as "java -Xmx1024M -Xms1024M -jar minecraft_server.jar"
 [INFO] Loading properties
 [INFO] Default game type: SURVIVAL
 [INFO] Generating keypair
 [INFO] Starting Minecraft server on 95.20.128.11:25565
 [WARNING] **** FAILED TO BIND TO PORT!
 [WARNING] The exception was: java.net.BindException: Cannot assign requested address: JVM_Bind
 [WARNING] Perhaps a server is already running on that port?

como lo soluciono... +1[esta en la ver sion 1.5 lla que con el amigo que me voi a conectar tiene esa version]
EDITADO EL 21-12-2013 / 11:51 (EDITADO 1 VEZ)