--- mozilla/mail/app/profile/all-thunderbird.js.fix	2012-07-05 23:26:02.000000000 +0400
+++ mozilla/mail/app/profile/all-thunderbird.js	2012-07-05 23:54:59.000000000 +0400
@@ -43,9 +43,10 @@
 #define UNIX_BUT_NOT_MAC
 #endif
 #endif
 
-pref("general.useragent.locale", "@AB_CD@");
+pref("intl.locale.matchOS", true);
+pref("general.useragent.locale", "chrome://global/locale/intl.properties");
 pref("general.skins.selectedSkin", "classic/1.0");
 
 #ifdef XP_MACOSX
 pref("browser.chromeURL", "chrome://messenger/content/messengercompose/messengercompose.xul");