The parcellite 1.0.2-0.1.rc5 build doesn'ẗ actually build binaries but ships the ones included in the unclean upstream tarball. http://kojipkgs.fedoraproject.org/packages/parcellite/1.0.2/0.1.rc5.fc18/data/logs/x86_64/build.log Note also how the binary is 64-bit, also in the ix86 package: http://koji.fedoraproject.org/koji/rpminfo?rpmID=2991147
parcellite-1.0.2-0.2.rc5.fc17 has been submitted as an update for Fedora 17. https://admin.fedoraproject.org/updates/parcellite-1.0.2-0.2.rc5.fc17
Thanks for spotting this!
parcellite-1.0.2-0.2.rc5.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report.