--- mozilla-esr10.orig/browser/app/profile/firefox.js	2012-08-25 01:00:04.000000000 +0400
+++ mozilla-esr10/browser/app/profile/firefox.js	2012-09-08 01:18:46.807590868 +0400
@@ -241,7 +241,7 @@
 
 // Whether or not the application should check at startup each time if it 
 // is the default browser.
-pref("browser.shell.checkDefaultBrowser", true);
+pref("browser.shell.checkDefaultBrowser", false);
 
 // 0 = blank, 1 = home (browser.startup.homepage), 2 = last visited page, 3 = resume previous browser session
 // The behavior of option 3 is detailed at: http://wiki.mozilla.org/Session_Restore