There's a Firefox update that fixes several security vulnerabilities. One of these could allow a hacker to take over your computer. You can download the update here.

In other Firefox news, I installed an extension that adds a Print Preview function that works well. You can download it here. It's a 4KB file that installs easily. Afterward, you'll have to restart Firefox.

If you want to uninstall an extension, go to the Tools menu and select Extensions. A window will appear with a list of your extensions. Click the extension, then the Uninstall button.

If newer versions of your extensions are available, you'll see an Update Now button. Just click and the update will be installed.