So I have been trying again to get SFTP jails working using http://library.linode.com/security/sftp-jails and I had no luck getting it to work - I also tried Use Public Key Authentication with SSH: http://library.linode.com/security/ssh-keys which crashed halfway through - now I can't get into my ssh or through SFTP as root. Royally stuck and I have no idea what to do!