In Red Hat's Bugzilla installation, the components list for Powertools seems to be old. It has the GNOME packages which have been moved to the main distribution in Red Hat 6.0 and later, and there is at least one package in newer versions of Powertools that isn't listed, micq.
In component list for powertools-6.2, "purp" is missing too, and since it seems not to work with redhat-6.2 ...
Powertools has gone