diff -ru icecat-9.0.1.orig/browser/app/profile/firefox.js icecat-9.0.1/browser/app/profile/firefox.js
--- icecat-9.0.1.orig/browser/app/profile/firefox.js	2011-12-27 00:11:30.000000000 -0500
+++ icecat-9.0.1/browser/app/profile/firefox.js	2011-12-27 00:11:39.000000000 -0500
@@ -48,6 +48,8 @@
 #endif
 #endif
 
+pref("general.startup.browser", true);
+
 pref("browser.chromeURL","chrome://browser/content/");
 pref("browser.hiddenWindowChromeURL", "chrome://browser/content/hiddenWindow.xul");
 
@@ -487,6 +489,9 @@
 pref("browser.gesture.twist.left", "");
 pref("browser.gesture.tap", "cmd_fullZoomReset");
 
+// Use LANG environment variable to choose locale
+pref("intl.locale.matchOS", true);
+
 // 0=lines, 1=pages, 2=history , 3=text size
 #ifdef XP_MACOSX
 // On OS X, if the wheel has one axis only, shift+wheel comes through as a