I am not aware of spell-checking abilities in Firefox, however, if you are referring to localization, you will indeed need to install the FIrefox language/region package, since it is not a program controlled by the desktop environment.
If you are rferring to spell checking abilities in Firefox, could you plese enlighten me and tell me how you have set that up, because it doesn't seem to be turned on be default. Also, UK and USA English have some minor differences in spelling, that is why there are seperate localizations / dictionaries for these languages. ** Changed in: firefox (Ubuntu) Assignee: (unassigned) => Wim van der Meer Status: Unconfirmed => Needs Info -- Duplicate spell checking dictionaries for EN/UK and EN/US https://launchpad.net/bugs/66015 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs