Sun Java Enterprise System 5 Update 1 Upgrade Guide for Microsoft Windows

Upgrade Directory Server Dependencies

It is generally recommended that all Java ES components on a computer system (and in a computing environment) be upgraded to Release 5U1. Before upgrading Directory Server, you need to upgrade CAC, MFWK, SJWC, and Security components (NSS,JSS,NSPR). Also, Directory Server requires that Windows Installer patch (126910–02) is already applied.