In order to provide the smoothest upgrade path from Red Hat Linux 7.2 with Ximian GNOME installed, a few packages need minor changes. Mostly they just need to obsolete subpackages where Ximian splits packages differently than Red Hat does. The dependencies of this bug are all Ximian upgrade related bugs.
Ximian upgrades are not supported. In the installer: This system appears to have third party packages installed that overlap with packages included in Red Hat Linux. Because these packages overlap, continuing the upgrade process may cause them to stop functioning properly or may cause other system instability. Do you wish to continue the upgrade process? Also, check the release notes.