Yes I did completely, now when I open an email link, it takes me to a Firefox page, but I can’t navigate to other firefox pages from there, just the page or pages associated with the link.
Again, what OS (Operating System) are you using?
If you are on Windows, can’t help much.. besides asking you to check your install/uninstall (think it’s under programs and files.... then open up Registry... not giving advice past there.. I don’t want to be blamed if it crashes your system :/ (but search for FireFox, and delete any and all)).. If you are on Linux, you need to uninstall, then purge.. Mac.. no idea :p