Firefox version 6.0.2 has been released with the following release notes:
Removed trust exceptions for certificates issued by Staat der Nederlanden (see bug 683449 and the security advisory)
Resolved an issue with gov.uk websites (see bug 669792)
Click here to visit the FireFox download page.
Also, make sure to click here and check to see if you are using the latest version of Flash. If you are not, download the file, close your browsers, and install. this is important for your web security.