An emergency update for Firefox was released today,. Firefox 9.0.1 addresses a crash upon startup after updating to Firefox 9.0 for mainly Mac users. However, Linux and Windows users were not immune to this crash either, just a lot less frequent. For more information see bugs: 711794, 708572 and 335998. This update is available for Windows, Linux and Mac users (Android and tablet users will be staying on Firefox 9.0). Current Firefox 9.0 users go to Help > About Firefox to get the latest update or you can manually update at getfirefox.com.