I have been having this problem with Firefox for several months.
I get the below message some times loading web pages
The connection was reset
I have deleted firefox and reloaded it a couple of times.
Also changed dns server several times.
I do not get the message using Safari
We are on Frontier fios


"The connection to the server was reset while the page was loading.

The site could be temporarily unavailable or too busy. Try again in a few moments.
If you are unable to load any pages, check your computer's network connection.
If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web."