Shortly after the release of version 3 of the Firefox web browser, the Mozilla Foundation has announced a series of vulnerabilities and has released an update to version 2 of this popular program. If you are still running Firefox 2, you should update, as four of the vulnerabilities are rated “critical”. However, it’s probably wiser to update to Firefox 3, which has a longer life ahead of it. The Mozilla Foundation announced that they will be no longer supporting version 2 after mid-December.