udunits (or one of its subpacakges) has multiarch conflicts when installed for both i386 and x86_64 in the Fedora development tree. For help in resolving them, see http://fedoraproject.org/wiki/PackagingDrafts/MultilibTricks.
file /usr/include/udunits.inc from install of udunits-devel-1.12.4-11.fc8.3 conflicts with file from package udunits-devel-1.12.4-11.fc8.3
(Note that this is an automated bug filing.)
It would be nice to have these bugs fixed by the beta of Fedora 9.
udunits-1.12.4-12.fc7 has been pushed to the Fedora 7 stable repository. If problems still persist, please make note of it in this bug report.