Well, a current discussion is whether to go for NAV 5.0 Service Pack 1 or not. On the one hand, NAV 5.0 SP1 has lots of improvements regarding SQL performance (Indexed Views, Buffered Inserts, etc.), on the other hand there are other issues and problems (slow FlowFields, lacking SQL 2000 capability, etc.). Once the decision was taken to upgrade – and in the following I ONLY refer to a technical upgrade , means the change of the C/SIDE programs, DLL, etc. – normally there is no way back to a previous...