OK... I have two servers (both 2008R2), one running Exchange 2010 and one running Office Communications Server 2007 R2. Both servers do their jobs admirably.

A feature of OWA is the ability to integrate OCS presence and IM. So I've followed the instructions to the letter. I now have a little presence ball on OWA and a contacts list under the folder list.

I can't change my presence. I receive a message saying "Your presence couldn't be changed. Please try again later."

My contacts list doesn't populate... double-clicking it returns an error report.

I can't seem to find much about troubleshooting this.

Please help people