physfs (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/share/doc/physfs-devel-1.0.1/html/annotated.html from install of physfs-devel-1.0.1-6.fc8 conflicts with file from package physfs-devel-1.0.1-6.fc8
  file /usr/share/doc/physfs-devel-1.0.1/html/files.html from install of physfs-devel-1.0.1-6.fc8 conflicts with file from package physfs-devel-1.0.1-6.fc8
  file /usr/share/doc/physfs-devel-1.0.1/html/functions.html from install of physfs-devel-1.0.1-6.fc8 conflicts with file from package physfs-devel-1.0.1-6.fc8
  file /usr/share/doc/physfs-devel-1.0.1/html/functions_vars.html from install of physfs-devel-1.0.1-6.fc8 conflicts with file from package physfs-devel-1.0.1-6.fc8
  file /usr/share/doc/physfs-devel-1.0.1/html/index.html from install of physfs-devel-1.0.1-6.fc8 conflicts with file from package physfs-devel-1.0.1-6.fc8
  file /usr/share/doc/physfs-devel-1.0.1/html/physfs_8h-source.html from install of physfs-devel-1.0.1-6.fc8 conflicts with file from package physfs-devel-1.0.1-6.fc8
  file /usr/share/doc/physfs-devel-1.0.1/html/physfs_8h.html from install of physfs-devel-1.0.1-6.fc8 conflicts with file from package physfs-devel-1.0.1-6.fc8
  file /usr/share/doc/physfs-devel-1.0.1/html/structPHYSFS__ArchiveInfo.html from install of physfs-devel-1.0.1-6.fc8 conflicts with file from package physfs-devel-1.0.1-6.fc8
  file /usr/share/doc/physfs-devel-1.0.1/html/structPHYSFS__Version.html from install of physfs-devel-1.0.1-6.fc8 conflicts with file from package physfs-devel-1.0.1-6.fc8
  file /usr/share/doc/physfs-devel-1.0.1/html/structPHYSFS__file.html from install of physfs-devel-1.0.1-6.fc8 conflicts with file from package physfs-devel-1.0.1-6.fc8
  file /usr/share/doc/physfs-devel-1.0.1/latex/doxygen.sty from install of physfs-devel-1.0.1-6.fc8 conflicts with file from package physfs-devel-1.0.1-6.fc8
  file /usr/share/doc/physfs-devel-1.0.1/latex/index.tex from install of physfs-devel-1.0.1-6.fc8 conflicts with file from package physfs-devel-1.0.1-6.fc8
  file /usr/share/doc/physfs-devel-1.0.1/latex/physfs_8h.tex from install of physfs-devel-1.0.1-6.fc8 conflicts with file from package physfs-devel-1.0.1-6.fc8
  file /usr/share/doc/physfs-devel-1.0.1/latex/refman.tex from install of physfs-devel-1.0.1-6.fc8 conflicts with file from package physfs-devel-1.0.1-6.fc8
  file /usr/share/doc/physfs-devel-1.0.1/latex/structPHYSFS__ArchiveInfo.tex from install of physfs-devel-1.0.1-6.fc8 conflicts with file from package physfs-devel-1.0.1-6.fc8
  file /usr/share/doc/physfs-devel-1.0.1/latex/structPHYSFS__Version.tex from install of physfs-devel-1.0.1-6.fc8 conflicts with file from package physfs-devel-1.0.1-6.fc8
  file /usr/share/doc/physfs-devel-1.0.1/latex/structPHYSFS__file.tex from install of physfs-devel-1.0.1-6.fc8 conflicts with file from package physfs-devel-1.0.1-6.fc8

(Note that this is an automated bug filing.)
It would be nice to have these bugs fixed by the beta of Fedora 9.