The DPM team has just published a new post on their blog regarding DPM 2010 and the DAG protection .

You can read the article at :

Ctrl P - The Data Protection Manager Blog! : DPM 2010 Protecting Exchange 2010 DAG in a Single Site
http://blogs.technet.com/dpm/archive/2010/01/08/dpm-2010-protecting-exchange-2010-dag-in-a-single-site.aspx

I sure hope you like the good news. 

Kind regards,

João Ribeiro