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Firefox for Mac OS 10.5 should be updated. I have OS 10.5.8. Do I need to upgrade?

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Firefox for Mac OS 10.5 should be updated. I have OS 10.5.8. Do I need to upgrade?

Firefox for Mac OS 10.5 should be updated. I have OS 10.5.8. Do I need to upgrade?

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Re: Firefox for Mac OS 10.5 should be updated. I have OS 10.5.8. Do I need to upgrade?

Firefox 16 is the last version that will run on Mac 10.5. You can purchase an update to Mac 10.6 for about $20 US, if the hardware in your machine supports it.