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Even with OS 10.5.8, 1.33 GHz PowerPC G4, cannot upgrade to Firefox 4.0.

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Even with OS 10.5.8, 1.33 GHz PowerPC G4, cannot upgrade to Firefox 4.0. The system requirements info for 4.0 says a computer with these specs should work. Mine will not.

Even with OS 10.5.8, 1.33 GHz PowerPC G4, cannot upgrade to Firefox 4.0. The system requirements info for 4.0 says a computer with these specs should work. Mine will not.

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Firefox 4 doesn't run on a PowerPC Mac.

Firefox 4 requires at least OS X 10.5 and an Intel Mac.

For an unofficial Firefox 4 compatible version that runs on Mac OS X 10.4.11 or Mac OS X 10.5.8 (PowerPC) you can look at:

Firefox 3.6.x (Mac OS X 10.4 and later) can be found here: