A follow-up from yesterday's post, where I said, in part:
If you don't have Automatic Updates turned on, please be a good Netizen and visit update.microsoft.com.
It looks like not all of the available updates from Microsoft got downloaded and installed automatically, at least for me, even though I have Automatic Updates turned on. Perhaps this is because they are marked Important instead of Critical. So, visit that above link, if you please. Or, if you're on one of them newfangled versions of Windows, just run Windows Update from the Start menu.
Your Internet thanks you.