Error: Cannot retrieve the information for application credential key

http://www.petestilgoe.com/2009/08/error-cannot-retrieve-the-information-for-application-credential-key/

http://sharepoint.microsoft.com/blog/Pages/BlogPost.aspx?PageType=4&ListId={72C1C85B-1D2D-4A4A-90DE-CA74A7808184}&pID=920