Red Hat Enterprise IPA 1.0 Server depends on:
Red Hat Directory Server 8.0; installed as an IPA dependency
Red Hat Enterprise Linux 5.2 Server
MIT Kerberos 1.6; typically installed as part of Red Hat Enterprise Linux
All other IPA requirements are installed as dependencies during the IPA installation process.
See also Bug #441579 in the Known Issues section of the Red Hat Enterprise IPA 1.0 Release Notes.