Firefox 5 Released by Mozilla Foundation

Despite Firefox 4 having been released just three months ago, the Mozilla Foundation, the organization behind the Firefox web browser, has already rolled out Firefox 5, and here's the kicker, Firefox 4 is no longer being supported.

What does this mean?

It means if you're running Firefox, you must upgrade to keep your PC secure.

No ifs, ands, or buts.

What's different?

As far as looks go, it's pretty much identical to Firefox 4, so there won't be any surprises there.

Computerworld has a brief write-up of the changes, although this bit summarizes everything handily,

Although the company said it added more than 1,000 improvements to the browser, most were minor bug fixes or tweaks.

"Among the most significant changes were enhanced support for HTML5 and new support for CSS (cascading style sheet) animations.

"So now what?" you ask?

If you're running Firefox, upgrade now. Don't wait. Don't put it off. Do it now. Older versions are--as of June 21, 2011--officially unsupported.

Translation: no security updates.

So, if the bad guys start targeting the old version of Firefox, which they will, you're putting yourself at risk. It's not worth it.

Just take care of it. It's free. It's fast. It's easy.

Where do you get it?

Download Firefox here.