Constantly asking to restart for updates to be installed

I get this message "The Computer must be restarted before updating can

continue". I restart, I get it again and again and again. I haven't the

slightest idea as to what it was I installed that caused it to do this. I am

using Vista Ultimate.

I'm annoyed by it now. I have been answering no to it for quite some time.

I wasn't in the mood yet to go searching all over the net for the answer.. =\

Thank you

Todd