diff -p -up comm-1.9.1/mozilla/modules/libpref/src/init/all.js.configfile comm-1.9.1/mozilla/modules/libpref/src/init/all.js
--- comm-1.9.1/mozilla/modules/libpref/src/init/all.js.configfile	2009-12-02 10:27:39.000000000 -0200
+++ comm-1.9.1/mozilla/modules/libpref/src/init/all.js	2009-12-02 10:28:46.000000000 -0200
@@ -51,7 +51,8 @@ pref("keyword.URL", "http://www.google.c
 pref("keyword.enabled", false);
 pref("general.useragent.locale", "chrome://global/locale/intl.properties");
 
-pref("general.config.obscure_value", 13); // for MCD .cfg files
+pref("general.config.obscure_value", 0); // for MCD .cfg files
+pref("general.config.filename", "thunderbird.cfg");
 
 pref("general.warnOnAboutConfig", true);