hi,
nice posts here:
"Blocks & Deadlocks in NAV with SQL Server"
community.dynamics.com/.../blocks-38-deadlocks-in-nav-with-sql-server.aspx
"How to detect locking order for a NAV process"
blogs.msdn.com/.../how-to-detect-locking-order-for-a-nav-process.aspx
a great book by Jörg A. Stryk updated to NAV 2013 (edition 2014)
"The NAV/SQL Performance Field Guide"