The parcellite 1.0.2-0.1.rc5 build doesn'ẗ actually build binaries but ships the ones included in the unclean upstream tarball.
Note also how the binary is 64-bit, also in the ix86 package:
parcellite-1.0.2-0.2.rc5.fc17 has been submitted as an update for Fedora 17.
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.