Tell whoever made that decision that having 4 cals and 10 connections will get you some nasty fines when you get audited.
The blocking, however, is not related. What did you upgrade from? 2000? Have you rebuilt all indexes? Updated all statistics? Checked what's blocking and what it's blocked by?
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability