I think you are beginning to see the problem I am describing. I do not think cloverleaf is loosing messages, I think they are getting lost on the FTP server. The message you see in the log is the only thing cloverleaf sees from the FTP server, that it got the message. It doesn’t let cloverleaf know what it did with it like an ACK coming back from an application would. I believe there can be a problem on the FTP end and cloverleaf will never know about it unless it gets to the point the FTP server does not accept the message.