When using http://www.redhat.com/bugzilla/ I have to enter my login data after each click again and again. All things are working fine when using http://bugzilla.redhat.com/bugzilla/, so I suggest to redirect http://www.redhat.com/bugzilla/ to this URL.
Ok, I have verified this to be true. Thank you for bringing it to my attention. I will contact webmaster and see if I can get this resolved.
This seems to be fixed now for me. Please reopen this bug if it is still failing for you.