Sorry for the misscommunications on my part.

Here are some samples of sites that do not load:

http://www.avast.com/eng/download-avast-home.html
http://www.weather.com/
http://www.amazon.com/ (partially loads)
http://www.microsoft.com/

some that load OK:
http://www.miamiherald.com/
http://www.miami-dade.com/

with respect to browser setting (firefox), can youtell me what browser setting you want?

thanks again