You are over-reaching on the "never bothered to check". Never bothered would not mean I haven't tried using GNOME3 at all. I changed over my desktop and used it for 3 weeks on Fedora-15 and am using it again for Fedora-16. I have asked around for help and gotten the "Making changes to the desktop, screensaver, etc is not to be done." answers.
My issues were solved by Rahul. The systems I have run in fallback mode so I am not using mutter or seem to have any access to it. Such is life.