upgrade from GTK 2,8 to GTK 2,10, Whereand how? What is GTK?
Unstalling 3.6.8 Need GTK 2.10 upgrade
GTK (Gimp Tool Kit) is a set of programs that draw the user interface - what you actually see and use. It's a bit of Firefox that's different in Linux to Windows or Mac, which have their own equivalents.
The newer version of Firefox needs a newer set of GTK program libraries than you have. You may or may not be able to upgrade GTK - other parts of your system use it.
The best way is to look for a version of Firefox 3.6 that has been built specially for your version of Linux. But there may not be one.
Are you using Ubuntu? If so look at Ubuntuzilla http://sourceforge.net/apps/mediawiki/ubuntuzilla/index.php?title=Main_Page
If not what Linux distro and version are you using?
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