Anatomy of a Successful Enterprise Linux Distro?

phenix asks: "With the new release of Novell Linux Desktop, and the upcoming release of Sun JDS3, I am curious to hear how these two suites, and their underlying enterprise infrastructures (JES and OES) compare. Specifically, I am interested in their ease of management/deployment in these areas: directory services, productivity (office) applications, centralized application serving, centralized document storage, groupware, and remote application installation. All of these, of course, without the use of Windows products like Exchange and Windows technologies like Active Directory. Is there a better alternative?"