Computer asks for an update restart every time

Hi,

For some reason, everytime I start up my computer (Vista) it asks me to
restart to finish an update. I have allowed the restart several times, but no
updating happens and it just asks me to restart to finish an update again. I
just installed SP1, but this problem was occuring before that and is not the
continual restart that haunted SP1 last month. I am using auto update, but it
has to ask me to install updates. Other than this I am having no problems.
Any advice?

Thanks,
Patrick