Mozilla released an update for Firefox 10.0.0 desktop and Android along with Firefox ESR on February 10, 2012. Version 10.0.1 fixes a startup crash and an issue with Java applet causing text entry fields to become semi-unresponsive. User should now be able to update from Firefox 10.0.0 (desktop and ESR) to the new 10.0.1 version via Help > About Firefox.