I am a software tester and need to test our software against all minor versions of Firefox 4.x.x. Where can I find a list of ALL releases of Firefox 4.x.x? The main release page http://www.mozilla.com/en-US/firefox/all.html is exactly what I am looking for, except that it only lists the latest version (4.0.1 at this time). So was there a 4.0.0 release? I need to know and I need an ability to download it for all major OS's (Windows, Mac, OS X). Basically I need to know where to go to find all "official" releases of Firefox 4.x.x. Note that this page exists for Firefox 3.x.x, but our software is only supported on Firefox 4.x.x.