java.net.SocketException: Socket closed - On Server Shutdown

This error occurs on shutdown (stop) on both Windows and CentOS linux vanilla Minecraft servers. I have noticed it since the 1.4 pre-release. It causes no issues to game play obviously since it only occurs on shutdown.

I am including my start up scripts, command line outputs and server.logs in a single file as an attachment.

Reinstalling Java did not correct the issue on either system.