Exchange 2010 uninstall, public folders issue

Hello,

I am trying to run setup.com /m:uninstall to remove exchange 2010 from a server. This is in a mixed exchange 2003/2010 environment, and I keep receiving this message:

CN=Public Folders,CN=Folder Hierarchies,CN=First Administrative Group,CN=Administrative Groups,CN=XNA,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=XNA,DC=Local

Performing Microsoft Exchange Server Prerequisite Check

    Configuring Prerequisites                                COMPLETED
    Mailbox Role Checks                                       FAILED
   
     Uninstall cannot continue. Database 'Public Folder Database 1394948284': Ex
change can't remove the public folder database Public Folder Database 1394948284
 because it's the last public folder database in an organization that has pre-Ex
change 2007 servers. Organizations that have pre-Exchange 2007 servers must have
 at least one public folder database.

To jump straight to the point, there was no data at all on the exchange 2010 server, and the users have no data in the 2003 public folders either (they don't use).  

What is the fastest way to deal with what is hopefully my last error so I can uninstall?

TIA.