dues not work!

For everyone getting confused like me, you have to install the Dictionary add on as well as the language pack for it to spell check your text fields properly. The dictionary is linked from this page too: https://addons.mozilla.org/en-GB/firefox/language-tools/

My English (Britain) has disappeared but when I try to add it, i can only remove it ? ? ?

Perfekt ... großer Wortschatz :)
.... daher gerne 6 Sterne :P

I really do think that this should actually be built-in to all Mozilla's latest releases, in placement of that awful, bastardised, corrupted, oversimplified 'Murkin version of our incredibly nuanced language.

Standards and IQs are dropping and people need to be exposed to correct English.