[root@bugs ~]# rhnreg_ks --serverUrl=http://spiff.royalhighness.org/XMLRPC --activationkey=1-centos6-x86_64 -vvvv
D: rpcServer: Calling XMLRPC registration.welcome_message
D: opening  db environment /var/lib/rpm cdb:mpool:joinenv
D: opening  db index       /var/lib/rpm/Packages rdonly mode=0x0
D: locked   db index       /var/lib/rpm/Packages
D: loading keyring from pubkeys in /var/lib/rpm/pubkeys/*.key
D: couldn't find any keys in /var/lib/rpm/pubkeys/*.key
D: loading keyring from rpmdb
D: opening  db index       /var/lib/rpm/Name rdonly mode=0x0
D: added key gpg-pubkey-c105b9de-4e0fd3a3 to keyring
D: added key gpg-pubkey-6b8d79e6-3f49313d to keyring
D: added key gpg-pubkey-863a853d-4f55f54d to keyring
D: added key gpg-pubkey-0608b895-4bd22942 to keyring
D: Using legacy gpg-pubkey(s) from rpmdb
D: rpcServer: Calling XMLRPC registration.welcome_message
D: opening  db index       /var/lib/rpm/Providename rdonly mode=0x0
D: rpcServer: Calling XMLRPC registration.new_system
A protocol error occurred: Internal Server Error , attempt #1,
Error communicating with server. The message was:
Internal Server Error
D: closed   db index       /var/lib/rpm/Providename
D: closed   db index       /var/lib/rpm/Name
D: closed   db index       /var/lib/rpm/Packages
D: closed   db environment /var/lib/rpm
[root@bugs ~]#