Yet again, a bug fix created a new problem. This time it occurred with Internet Explorer 6 and 7 on Windows XP and Vista.
The problem is that Internet Explorer crashes after viewing a web page. Not all web pages though, I was able to successfully view about half of those I tested with IE6. One site that crashes it pretty quickly is Microsoft's own msn.com (they offered it as an example).
It wasn't hard to find information online about this problem which was introduced in the December 11th round of bug fixes to Windows.