The new version of ssh defaults to disabling plaintext password authentication on the client side, which tripped up at least one person. It is actually a good idea to default this to disabled so we are not going to change it.
There are two solutions. The first is to supply ssh -o PasswordAuthentication=yes on your ssh line when ssh'ing to a target that you need plaintext authentication with. The other is to simply specify the feature in /etc/ssh/ssh_config (for the client side). -Matt
