VNC Connection Spontaneously Dropped

[Calvin Webster]

Problem:

I just recently had a VNC session drop without warning in the middle of
an X session on a RHEL 4 server. Since the session was initiated on the
server via xinetd, the disconnect aborted the entire X session. The
server is running vnc-4.1.2-1, while the client was vnc-4.1.1-10.1.

Questions:

1. What might cause a session to drop without warning like this,
assuming network connectivity remains constant and there was no explicit
action to terminate?

2. How can I setup logs on server and/or client to record vnc messages
and activity?

Background:

I have never had this happen on a VNC connection to the native console
(0:) display, but I can recall one or two occasions in the past where
sessions dropped on xinetd connections.

I have already upgrade the client to vnc-4.1.2-1 in case the disparity
in versions contributed to the event.

Thank you!

--Cal Webster