Enable spell check in all fields in Firefox

If you want to enable spell check on every field in Firefox you just have to do the following.

Open Firefox
In the address bar type “about:config”
In the filter box type “layout.spellcheckDefault”
Change the value to a “2”, by default it should be a “1”
Restart Firefox

That should enable spell checking in all field’s in Firefox.  I don’t know what the overhead is, but I don’t imagine it being that much.