It is said that if you wanted a web browser that combines performance and "fun" browsing you will have to get a
Firefox 
you know, something like the
Ferrari 458 Italia, a very fast and fun to drive at the same time.

and today that latest version of Firefox, the "Firefox 4" is finally out after months of development and heavy testing.
Mozilla has setup a counter to count how many downloads will it get in 24 hours, right now the number is closing rapidly to
5 Million downloads !
check it out here in HTML5 page :
http://glow.mozilla.org/and grab you copy here :
http://www.mozilla.com/en-US/firefox/new/Happy Browsing !