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up grading to firefox 4 was a bad idea, my sistem wont suport it it is 10.4.11

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I was running on 3.6 but i Had tried to upgrade because when I want to open mail in yahoo. it wont go and it says it's a bad request.S0 I tried to upgrade to a newer version of firefox and it won run in my system because My computer version 10.4.11

Chosen solution

For older Macs that aren't supported in Firefox 4.0 & 5.0, try TenFourFox for PowerPC's running Mac 10.4.11 & 10.5.8 .
http://www.floodgap.com/software/tenfourfox/

Or stick with Firefox 3.6.19.
http://www.mozilla.com/en-US/firefox/all-older.html

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Chosen Solution

For older Macs that aren't supported in Firefox 4.0 & 5.0, try TenFourFox for PowerPC's running Mac 10.4.11 & 10.5.8 .
http://www.floodgap.com/software/tenfourfox/

Or stick with Firefox 3.6.19.
http://www.mozilla.com/en-US/firefox/all-older.html