Even when iAS 6.0 comes together, it doesn't come together that tightly. You use one administrative console to manage the Web and LDAP servers and another to manage the J2EE services. The J2EE console initially comes up blank, clueless about the server you just installed. You must tell iAS about itself, but carefully. If you check the box that enables automatic reconnection, the console hangs and will not launch again.
Online documentation is scattered and some hyperlinks point to nonexistent documents.
Once iAS 6.0 gets going, it hums. This distributed approach is possible with Java Web and database services, but not without invoking the burdensome overhead of J2EE on each server. 2000's Active Directory is not yet supported. Your applications will also benefit from tunable load balancing and cached database connections, all without requiring special code. These are extra-cost options that will reach well beyond the capabilities of basic J2EE servers but will add to the cost of an already pricey solution.