Microsoft just release a bunch of critical Windows updates yesterday. If you haven't updated your system in a while why not do it right now. Just click here and follow the instructions.

Also most people, even the ones that perform regular Windows updates, fail to update their Office software. Microsoft actually release quite a few security and performance related updates for the software. If you have Office installed, or any of its components (Word, Excel, PowerPoint, etc.) Why not click here and get updated. (Click on the "Check for updates" button when the web page loads.)