That one that checks for malware updates all the time. To figure this out, supply which update.
Bob
Microsoft's Windows 7
The automatic updates on my friends computer keeps repeating the same updates over and over. It repeats like 7 updates all the time. I believe that her son had Vista on this computer and then upgraded to Windows 7.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic