Ice storm problem!

We meet a problem in our project. In the project application A (VC) send many messages to server B (ICEStorm), and another application C (Java) subscribe a topic from B. at first all the things run well. But after a time, we found C can't receive any messages from B until we restart the application A and send a message again. When the last message sent from A, all the messages sent by A before can be received by C. I don't know why. Is there anybody know the answer?

Pretty hard to give advise based on that description. I suggest you enable network tracing to find out exactly what is going on. For the subscriber, publisher and icestorm enable set Ice.Trace.Network=1 (or 3 for much more information) in the configuration files.