Each time Microsoft sends out a new "service pack" for Windows - with improvements or repairs for your computer's operating system - your computer will badger you with an annoying popup announcement. It says something like "important updates have been installed on your computer but you have to restart it for them to work, so do you want to restart your computer? Huh huh huh do you do you do you? Or not?" (I'm paraphrasing). In my case, this usually happens when I'm right in the middle of something and the popup keeps badgering me every 10 minutes or so, interrupting my work and driving me crazy. Well here's how to make it stop. Go to your "Start" menu in the lower lefthand corner of your computer screen. Click on "Run" and then, when a little popup window window appears, type "cmd" into the box and click OK. A strange black box will appear on your screen. Type "sc stop suauserv" and hit the Enter key. The black box will go away and the popups will stop.
Don't worry, when you turn your computer off at the end of the day the service pack installation will be completed for the next time you reboot.