XP on my desktop recently updated to SP3. Since then it has been constantly finding 1 update after another. On closer inspection it seems to be the same update over and over...

:
"Installing Security Update for Microsoft XML Core Services 4.0 Service Pack 2 (KB936181)"
Each time it does it is says installation is complete. There are no error messages. Any clues about what to do about this? All I could find searching the web so far is discussion about a failure error message...
Al.