The full story is here
http://www.pcworld.com/article/20100...erts-warn.html

But even if you do need to use them (there are several sites for example we need to use it for), click through to the Microsoft page and follow the steps they outline to better protect yourself until they get the patch out.

The Microsoft Security Advisory from yesterday is here
http://technet.microsoft.com/en-us/s...visory/2757760