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I'm running OS X 10.5.8 & Firefox says that my computer is not compatible with the most recent upgrade. What am I missing? Thanks!

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I'm running OS X 10.5.8 & Firefox says that my computer is not compatible with the most recent upgrade. What am I missing? Thanks!

I'm running OS X 10.5.8 & Firefox says that my computer is not compatible with the most recent upgrade. What am I missing? Thanks!

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The last version of Firefox which is compatible with PPC architecture is Firefox 3.6.x.
http://www.mozilla.com/en-US/firefox/all-older.html

For older Macs that aren't supported in Firefox 4+ versions, try TenFourFox for PowerPC's running Mac 10.4.11 & 10.5.8 .
http://www.floodgap.com/software/tenfourfox/

http://tenfourfox.blogspot.com/