I don't know whether it's a gtk or a gdm bug, but the mouse cursor in the
gdm login window disappears when using gdm with gtk 1.2.9. This is true for
the RedHat RPM as well as gtk compiled from vanilla tarball.
This should be fixed as of gtk+-1.2.9-3. Since it doesn't
look like rawhide.redhat.com has that yet, you can grab