I've just created yum repository metadata for Mozc on my fedorapeople space. you can install the latest package after installing mozc.repo file under /etc/yum.repo.d on your system.
Currently it contains the binary rpms for i686 and x86_64 only on Fedora 12 and 13. but not for ppc nor ppc64 because unfortunately the build failed.
For another news, started to include mozc-config in the package. though I pondered to make another package for that, it was difficult to do so because it requires the build environment of Mozc for header files and static libraries and objects.
Enjoy,
[Update: 2010/05/28]: fixed a fail on i386 box to fetch the metadata via yum; sorry for inconvenience.
[Update: 2010/06/22]: fixed the repo file and URL because it has been changed due to the restructure of the package.