You often get updates you don't need. Turn it off and once a month visit the update site and pick and choose updates that pertain to your needs. Very few people need the dot Net anything.
I am currently runnin XP on my PC. Recently every I boot my PC I get the icon in my system tray that there are automatic updates available.
Each time I run this, it is the same one ie
Installing Security Update for Microsoft .NET Framework, Version 1.1 Service Pack 1 (KB928366).
I recently ran an application to stop some of the services at startup, has this caused the problem?

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