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