I18nService.instance.lang = ''fr'' sets the language for the whole application (singleton) So if 2 users are using the application they both are seeing French as their interface language. How to set the language in a per request manner ? Karol Hosiawa _______________________________________________ Rails mailing list Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org http://lists.rubyonrails.org/mailman/listinfo/rails