How does the "Commit pending changes" action work and when is it best used?

http://connect.nintex.com/forums/thread/7827.aspx

Limitations of External Lists

http://salaudeen.blogspot.de/2012/03/limitations-of-external-lists-in.html

http://sharepointmike.wordpress.com/2011/03/02/10-things-you-cannot-do-with-an-external-list/

All About Nintex

http://www.vadimtabakman.com

Understanding Developer Dashboard

http://www.cnblogs.com/csts/archive/2012/04/19/2457244.html

Developer Dashboard SharePoint 2010 | SharePoint Boco

Developer Dashboard « Extreme Sharepoint

http://www.topsharepoint.com/enable-developer-dashboard-in-sharepoint-2010