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Trying to download 4.0; firefox logo appears with a white circle and line through it. Error message states this application is not supported on this architecture. Been using using Firefox for years.

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I go through the download steps (4.0); at the completion of the download the firefox logo has a white circle and a line through it. When I attempt to launch the application an error message states this application is not supported on this architecture"

Apple iBook G4 Operating System 10.4.11 OS X

I go through the download steps (4.0); at the completion of the download the firefox logo has a white circle and a line through it. When I attempt to launch the application an error message states this application is not supported on this architecture" Apple iBook G4 Operating System 10.4.11 OS X

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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: