BOE 3.1 SSO InfoView versus OpenDocument

First off - InfoView Single Sign On works fine.

OpenDocument SSO (URL link in an email sent by BOE) does not work. Always prompts for windows login. If I provide the parameters the report runs fine. But obviously not acceptable by my users.

Note we are not using SiteMinder.

In my Web.config file for InfoView, the value for trusted.auth.user.retrieval is blank as well as trusted.auth.user.param. So I left them blank in the Web.Config file for InfoView. Is this the problem? Which setting should I use?

I did find a ticket in SAP (1255277) where it says SSO OpenDocument was fixed in a Fix Patch 1.

If that is the case, I have installed some patches to 3.1, but it has been awhile and I am not sure what patch level I am at.

How would I determine what patch level I am at to see if I am up to date?