windowsupdate doesn't recoginze that I have already installed Update Rollup 1 for Microsoft Windows

[NotGiven]

I went to windowsupdate to scan for updates. It said I needed
Update Rollup 1 for Microsoft Windows XP (KB826939). AGAIN.

I checked my history and I have already "installed" it 4 times. It still
thinks i need it.

What do I do?

 

[Thorsten Matzner]

I went to windowsupdate to scan for updates. It said I needed
Update Rollup 1 for Microsoft Windows XP (KB826939). AGAIN.

See "Windows Update Site Lists Updates That You Already Installed"
(http://support.microsoft.com/?kbid=319109).