--- mozilla-beta/browser/app/profile/firefox.js.lang	2011-07-21 19:18:31.000000000 -0300
+++ mozilla-beta/browser/app/profile/firefox.js	2011-07-30 20:57:54.707580609 -0300
@@ -215,6 +215,9 @@ pref("browser.uitour.surveyDuration", 72
 pref("keyword.enabled", true);
 pref("browser.fixup.domainwhitelist.localhost", true);
 
+// Use LANG environment variable to choose locale
+pref("intl.locale.matchOS", true);
+
 pref("general.smoothScroll", true);
 #ifdef UNIX_BUT_NOT_MAC
 pref("general.autoScroll", false);