Check the time of the server… if the time of the server is e.g. in the future and you connect from a 2008 R2 server to a 2008 R2 server, you get a logon failure. After checking the AD-account etc. I did not find anything. However, from a 2003R2 server I could connect!!
OOB there is no way to get an overview where reusable content was used. When content editors change such a content item, they often want to see if the pages where it was inserted are still correct. However, this data is stored in SharePoint 2010 (should be also present in 2007):
After creating a console application to connect to SharePoint through the API, the following error can occur:
The Web application at http://intranet.local could not be found. Verify that you have typed the URL correctly. If the URL should be serving existing content, the system administrator may need to add a new request URL mapping to the intended application.