Are you using an ADO.NET connection manager to point to Notes? If not, you should be. The Data Reader Source requires a managed connection, so the connection manager must be ADO.NET (even if it just calls the OLEDB provider), not OLEDB.
Microsoft is conducting an online survey to understand your opinion of the Technet Web site. If you choose to participate, the online survey will be presented to you when you leave the Technet Web site.