Xscreensaver as shipped on the 6.0 CDROM is missing a dozen or so modules. These are the modules that require OpenGL or Mesa support. It would be nice if these modules were put into a second RPM (xscreensaver-extras ?) and added to the Redhat 6.0 or Powertools CDROMs.
they might be put on powertools at some point. Since there's no OpenGL/Mesa support in the distribution, it wouldn't make much sense to include them with the base distro....