It is possible to track the number of downloads of Firefox 4.0 through a counter set up by Mozilla that allows to realize their evolution in real time. So in just over 24 hours, Firefox 4.0 has already been downloaded more than 6 million times, and the meter keeps running at the time of writing.
It was in Europe that the final version of Firefox 4.0 has been most successful as there was downloaded nearly 2.6 million times against 1.5 million times in North America.
Germany is a champion of downloads of Firefox 4.0 (over 530,000), followed by Russia (about 260,000) and France with over 230,000 downloads. In detail, we discover that the Ile-de-France is leading with more than 74,000 downloads, followed by Rhone-Alps, the last of the class being Corsica.
As a reminder, Internet Explorer 9 whose final version was released in mid-March has recorded 2.35 million downloads in 24 hours. So unless Firefox 4.0 but it should be noted qu'IE9 can be installed on Windows XP so that this system is still present on more than half of PCs in the world, therefore some disability.