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Where to download a previous version of firefox?

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I want to go back to Firefox 3.6.3 (last version that worked for me!), but cannot find where to download it from?

Firefox needs to make previous version downloads easily available, if they want users to try their iffy upgrades!

This happened

Every time Firefox opened

With FF 3.6.6 upgrade, from FF 3.6.3

User Agent

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; GTB6.5; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C)

I want to go back to Firefox 3.6.3 (last version that worked for me!), but cannot find where to download it from? Firefox needs to make previous version downloads easily available, if they want users to try their iffy upgrades! == This happened == Every time Firefox opened == With FF 3.6.6 upgrade, from FF 3.6.3 == == User Agent == Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; GTB6.5; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C)

All Replies (2)

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I downloaded Firefox 4.0 and it works only for a few seconds then all I get is ding, ding, ding, I have to use task manager to close the browser. I need to know where to download that previous version of Firefox so that I can get to my email.