I can not open ff4(after installed) with a note you cannot use the application "firefox. app" with this version of Mac OS X.
I had ff3, but I upgraded to ff4. But in process of upgrading to ff4 I almost 70 times of dragging from ff simbol to applications, I am so tired of repeating it, So I stopped. and as last step I dragged ff simbol from appplication to side ff simbol. Next day I tried re-download over it, But it happen same thing, it says "you cannot use application"firefox. app" with this version of Mac OS X."
Alla svar (1)
Firefox 4 requires at least OS X 10.5 and an Intel Mac.
For Mac OS X 10.4.11 or Mac OS X 10.5.8 you can look at:
Firefox 3.6.x can be found here: