I was surfing the internet and I bumped into an article about saying to forget Windowsupdate http://update.microsoft.com/windowsupdate/v6/default.aspx
The Article is on a Dutch security site and you can find it here: http://www.security.nl/article/13346/1/Vergeet_Windows_Update%2C_gebruik_Microsoft_Update.html
In short: the website explains that windowsupdate only updates Windows related stuff and not other programs like Word and Outlook for example. Microsoft Update is the site to go to from now on if you would ask me. The site will do a check not only on Windows updates but also can update other products.
I must admit that I didn't knew that this site excisted. I have used it now and it is something I would recommend.