i go to the windows update site...and after a redirection im led to a page that shows this..and does nothing more:

Checking for the latest version of the Windows Update software...

Depending on your connection speed, this might take a minute. During this time, you may receive one or more security warnings. Review each security warning to ensure that the content is signed by Microsoft, and then click Install or Yes to install the software.
nothing happens..i get no warning watsoever...ne idea why???