If you are using Firefox, whether on Windows, Linux or Mac, it's in your best interest to go and get the latest version from Mozilla's site! Firefox 18.104.22.168 fixed various issues with the browser, including some related to memory leaks and privilege escalation (which can ultimately result in system compromise). As far as I can tell, all the bugs with updates removing bookmarks and breaking plugins have been fixed, and after updating everything seems to be fine, even 3rd-party plugins. You can read the full release notes for more details. Download today!