Siteminder and KM Access

Hello,

We use Siteminder for authentication to our Portal. When a user is sent a link to a document in KM they are prompted by Siteminder and then they are prompted again by KM.

Does anyone know how to remove the second prompt?

If the user logs into the portal and navigates to the documnet through the KM Content navigation the second prompt is not displayed.

Any ideas?

Thanks,

Keith