I don't think this is true in all cases - for example, if the protocol is UDP, and the packet size is less than the MTU size. Although, I could be wrong - I've always thought that to be the case.
I knew someone would have your response, that's why I earlier said I didn't want to argue that. :-) But thanks for your comments. -- http://mail.python.org/mailman/listinfo/python-list