http://bugs.winehq.org/show_bug.cgi?id=10921
--- Comment #4 from Adam Klobukowski atari@gabo.pl 2009-05-28 15:14:23 --- The problem is, (taking Firefox as example), that if there is no lang attribute set, Fireforx assumes default system locale language (that is Polish for me). That makes it select polish dictionary, and I have to switch to English manually. If language attribute would be set - I would not need to do that.
I think that setting something 'en' as lang attribute value is reasonable.