http://www.filehippo.com/download_firefox/history/
http://www.filehippo.com/download_firefox/11818/
Willy,
I had the same experience -- actually back when Mozilla went to FF4. At work they've pushed each new rev, so we are now at 11-something. They are a mess and I agree with about all of the Mozilla dev comments above and then some. To tame FF 11 requires concerted effort in configs, cascading style sheets, add-ons and a mess of other junk. It can be done, but why? Mozilla definately lost track of their customers and has been ignoring their input since FF4.
Firefox 3.6 is still supported and still patched. I run it on Vista Home 32-bit, also on Windows 7 Pro 64-bit, Win XP of course, plus all kinds of Linuxies and MacOS. Firefox 3.6 is still 32-bit but it works fine for what I need it for and doesn't aggravate me like FF 11, Vista, Windows 7, IE, et al.
Firefox 3.6.28 is the current patch level (08-March-2012), and Mozilla still releases security patches for it.
I go to File Hippo to get my updates. I don't know for sure where Mozilla keeps FF 3.6 on their web -- File Hippo works for me, and Major Geeks usually has the latest patch too. The downloads are the full Firefox install with newest patches.
http://www.filehippo.com/download_firefox/history/
http://www.filehippo.com/download_firefox/11818/ -- the 3.6.28 download page
If you run FF Add-ons like AdBlock Plus, NoScript, Cookie Monster, Greasemonkey, Stylish and the like you may have to check compatibility with FF 3.6 and turn off updates for the Add-ons.
Add-ons are hosted at addons.mozilla.org and there are previous versions and revision histories for about all the add-ons hosted there. Links to developer web sites in most cases too -- so you can get add-ons to match Firefox 3.6 version.
For that matter you will probably want to also turn off updates for Firefox since the Mozilla update will give you FF 12 rather than the next patch for Firefox 3.6
P.S. -- For the truly motivated, the Firefox 3.6 source code is here:
http://hg.mozilla.org/releases/mozilla-1.9.2
If someone just had to have 64-bit support for Firefox 3.6 they could build it from source. Chrome (Chromium) is also open source. Pretty sure IE doesn't do that.
