Anyone using Internet Explorer on a PC should just stop:

Exploit code for a critical flaw in fully patched versions of Microsoft Corp.'s Internet Explorer browser has been released on the Internet, putting millions of Web surfers at risk of computer hijack attacks.

The zero-day exploit, posted by a U.K.-based group called "Computer Terrorism," could allow a remote hacker to take complete control of a Windows system if the victim simply browses to a malicious Web site.

Ziff Davis Internet News have verified that the exploit works on fully patched Windows XP systems with default IE installations.

Click the button to go get FireFox:

I get a buck if you install it. Beer and skittles all around!

Hrmz... Google seems to be serving the wrong advert. Get Firefox Anyway, even if I don't get a dollar