I have a client with an older Mac running 10.4.11. They use Firefox. The problem they're having is occasionally when accessing MyFairpoint webmail I will get the attached error. States the connection was reset.
The inbox has over 10K messages in it. Speedtest.net reports .76kbps up and .25kbps down. If the Mac Mail is used everything works fine. I haven't been able to test Safari yet to see if the same problem exists. The webmail is the only time this message happens. When testing this machine where there is a better Internet connection I haven't been able to recreate this problem. That being said the problem only happens once or twice every other day.