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.

I upgraded to Firefox 22.0 and cannot access at least half of the sites I have been accessing using Firefox. I have used Firefox for over ten years. I get the following message: The connection was reset 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. I had to use MS Explorer to access Mozilla to ask this question.