web login

Our users don't always login to get their clntrust. Therefore I have
enabled the single sign on/SSL web login. Now I don't know if this is
purely a Vista thing but this does not work with the certificates.

I found the following link:

http://www.novell.com/support/php/se...200%2052872659

I'm not convinced this article is on the mark as we have been running
IE7 since XP days.

Is there any way of getting around this, and is this a problem since Vista ?

It is driving me nuts. Is anyone else copping this ?