I prefer just let firefox find its own problem and download the latest version when it comes out
As for IE, I nearly got rid of it, except for the dail in part for my msn
From a consumer standpoint, I didn't need it, Firefox had everything I needed, with the necessary protection.
From a developers standpoint, I honestly could not live without it. Still, Firefox has not yet reached 10% of the total market share, and might not ever. What is the majority of the market? Internet Explorer, because people don't know any better that there is much better software for their computers, that will protect and serve - for FREE.
Well, I have made it a point to get mostly everyone that I know to go out and install Firefox, not only for my peace-of-mind, but for the protection and longevity of their software and hardware.
-Steve