Until updated with
yum install firefox on fc5 to the latest version, firefox that came with the fc5 dvd worked fine. And post updation by
yum install firefox, the sites
gmail.com & https://addons.mozilla.org/firefox/ didnot open.
However, after downloading the latest software version from firefox website
(http://www.mozilla.com/products/down...in&lang=en-US) and pointing the program start button to
firefox in the extracted directory or running by
./firefox through that directory, the problem was solved.
However, on Windows firefox worked fine.