In RHGD, Firefox's start page is set to http://start.redhat.com/rhgd. That URL does not exist.
Donald is working on this
Correct. A request is in on this and is currently going through the PMO process.
I see the site is now in QA: http://start.webqa.redhat.com/ which is a good first step, but the /rhgd is missing and just redirects back to / / isn't the page we want since it has text like: "Introducing Red Hat Enterprise Linux 5." Which isn't useful for this product.
RHGD is dead.