For a table of platform updates and hotfix history for NAV version 5 with build numbers, update numbers and file contents, follow this link:
Overview of platform updates for NAV 5
This previous post contains the same information for NAV 4 SP3:
Overview of platform updates for NAV 4 SP3
Lars Lohndorf-Larsen (Lohndorf)
Microsoft Dynamics UK
Microsoft Customer Service and Support (CSS) EMEA