[IriDium]

It looks like ssh is set to allow root access only when no password is set.

If you set a password for root, you will be unable to ssh in directly as root.

If you wish to have a password for root and be able to ssh in, change:

PermitRootLogin without-password
to
PermitRootLogin yes

iin /etc/ssh/sshd_config. Note you'll have to use nano and not vi

Or do it via xbian-config, which if you upgrade, now works.