It is odd that they'd release a security advisory on the same day they release the security updates lol...
I also wonder why a fix is necessary. Wouldn't disabling it from within the control panel do the same? I sure would think so.
My gut instinct tells me this relates to those gadgets downloaded, not those native gadgets that came with the O/S. I would think Microsoft would have said more about it than:
“We’ve discovered that some Vista and Win7 gadgets don’t adhere to secure coding practices and should be regarded as causing risk to the systems on which they’re run”
...otherwise it might have read just "gadgets", not "some gadgets". By my thinking, it's the nicest way of alerting the public of some shoddy coding of something that Microsoft should have done themselves. Just watch...when this is resolved what they do with regard to the downloading of over gadgets from unknown developers.