Hi Pete...

The following is another graph of the latest tracing including hop 4... the last for our ISP:



I intend to watch packet loss on the destination host a bit more closely. I am beginning to wonder if the issue rests with the PLATO software... but they had a tech onsite with a packet sniffer one day and he supposedly observed a high rate of retransmission when sniffing traffic between a workstation here accessing PLATO curriculum on the web server at the end of the above trace. To me there could be a multitude of reasons for this, including the possibility that he may not even have the sniffer set up properly. You get the idea.

This is more of a case for using PingPlotter to demonstrate that there really are no significant problems with the link.

Thanks again for the analysis.

Tony