John Haxby wrote:
A little while ago when I created installed RHEL4 beta 1 on a test machine, I created an RHN account to look after it and registered the machine with that. That old account still exists and still has a machine registered to get updates on the RHEL4 beta channel. Unfortunately, that particular machine has been recycled.
Do you have any sort of backups? I think it's been mentioned on rhn-users that RHN identifies by /etc/sysconfig/rhn/systemid so if you have that somewhere you're fine.