said by nwrickert :

That seems to be related to SP1 installation problems.

I first tried to install SP1 about 2-3 weeks ago. The install failed "SP1 did not install. Reverting changes."

Last weekend there was another patch available. I installed that. It then again offered SP1. It failed again. Then I was offered KB938371. That installed. Then I was offered SP1 yet again. It failed yet again. Then I was re-offered KB938371 (which now shows as having been installed twice). After that, it offered XP1 for the fourth time. I declined - there is a limit to how much time I have for such nonsense in one day. I will put off my next attempt for a few weeks. Perhaps they will eventually get it right.