iOS 5 GM has already been jailbroken.
Where did you read that?
Stop posting links unless they are good links. Every site is been hammered right now bringing a lot of links and sites down !
Am I right in thinking you don't need your UDID registered to get this to install?
Downloading..
People in the MacRumors iOS 5 GM thread are saying installs fine with iTunes Beta/5GM etc even with none developer accounts