Description of Problem: The arts package in the current rawhide (20010504) has Source RPM: kdelibs-2.2.20010503-0.cvs20010503.1.src.rpm whereas the kdelibs has Source RPM: kdelibs-2.2-0.alpha1.2.src.rpm
Nothing to worry about. This happened because ftp was updated while the new package was building.