I'm using Firefox (v. 26 for Ubuntu). I'm the the U.S., and I keep setting the spell check to U.S. English (right click on a word marked as incorrectly spelled, choose Languages, then the correct one.) It briefly remembers, but after an hour or so (even within the same session) it reverts to Canadian English. I'm a web developer and am fine with hacking
about:config, but although I've set
en_US, it doesn't seem to stick around.
Is there any other setting I'm missing?