[Chris Maynard <Chris.Maynard@xxxxxxxxx>]

Another idea ... I was looking at tcptrace (http://www.tcptrace.org/) and in
particular the graphing capabilities it provides.  For example, have a look at
the graphing samples provided from the links under "subsections" at this page:
http://www.tcptrace.org/manual/node11_mn.html.  Looks like some good ideas that
could be incorporated into the Wireshark graphs.