Description of problem: This package seems to be missing dependencies on the libXt package. That is, it appears that libXmu should Require: libXt and libXmu-devel should Require: libXt-devel. Version-Release number of selected component (if applicable): 1.0.0-2.2
Fixed in rawhide. Note that FC6 is frozen at this point, so this change may not make the cut. In that case, it will appear as soon as FC7 opens.
This bug is still seems present in current FC5. c.f. https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=228730 Would it be possible to have an update for FC5, so we don't have to pollute our specs with work-around to this issue?