Networking :: SocketChannel Hangs Up After Several Read (ByteBuffer)

I wrote a proxy in java. The version with ServerSocket-Socket/Stream-IO works wonderfully. When I rewrote it to ServerSocketChannel-SocketChannel/ByteBuffer it works also very well. However, when I access YouTube things happen weirdly: The video is frozen after 3 or 5 minutes (but this did not with the version of ServerSocket/Socket). I strongly assume that there probably was a nasty bug....  The (shortened) codes are:

Server:
        public class BeanServer extends Thread {
             public BeanServer( ) { }
          public void run( ) {
               try {
                    bServer = ServerSocketChannel.open();

[Code] .....