I was forced to upgrade to newer version of Firefox. I haven’t had any security issues, nor was it working improperly, but because certain websites have changed their coding, and Firefox doesn’t quite function correctly (example: pulldown menus not pulling down)
Of course, the latest version GUI/Look is a gagger, so I had to fix that. (If I wanted to use something that looked like Chrome, I would use Chrome, thankyouverymuch). Then worked on the addons (Thank you Nightly Tester for making that somewhat easier) and then customizations.
(looks at Firefox) Well, close enough for government business.