If you have your PC set to download Windows Updates automatically then you may have noticed your PC either asked you to install the latest updates this morning, or installed them for you automatically.
If you haven’t seen this message then I recommend following the instructions here on how to perform a Windows update to make your PC more secure.
Depending on what software you run on your PC you may see different updates, but the general updates include ActiveX security updates, Office 2007 updates, the Malicious Software Removal Tool update, and a few other various updates for Windows XP.
Full details for the geeky sort can be found over on the MS site.