Rated 5 out of 5 stars

Από τον/την Michael DOUBEZ στις Απρίλ. 5, 2011 · μόνιμος σύνδεσμος

Saves me switching keyboard all the time. Work as expected and easy to configure.
Really can't ask for much more.

The version for FF4 is not yet released but tweaking the install.rdf of xpi works just fine.