Access denied by Business Data Connectivity

http://www.zimmergren.net/archive/2010/05/08/access-denied-by-business-data-connectivity-solution.aspx

http://sharepoint-2010-world.blogspot.com/2011/02/solution-to-access-denied-by-business.html

http://www.mikhaildikov.com/2010/05/access-denied-by-business-data.html