Firefox has just been upgraded to version 29, and is apparently one step closer to being a clone of Google Chrome. As usual, the update is absolute crap and many users are incredibly angry.
So, to downgrade to version 28 of Firefox, just run the full v28 installer which can be found here:
ftp://ftp.mozilla.org/pub/firefox/releases/28.0/win32/en-US/Firefox%20Setup%2028.0.exe
Oh, you should also submit some negative feedback and your thoughts about the “upgrade”, here: