--- mozilla-beta/browser/app/profile/firefox.js.defaultbrowser 2013-09-19 22:30:30.000000000 +0800 +++ mozilla-beta/browser/app/profile/firefox.js 2013-09-19 22:31:51.033717317 +0800 @@ -230,7 +230,7 @@ pref("general.autoScroll", true); #endif // At startup, check if we're the default browser and prompt user if not. -pref("browser.shell.checkDefaultBrowser", true); +pref("browser.shell.checkDefaultBrowser", false); pref("browser.shell.shortcutFavicons",true); pref("browser.shell.mostRecentDateSetAsDefault", ""); pref("browser.shell.skipDefaultBrowserCheck", true);