Can't log in via SSH

@minlexx Has discovered yesterday and me today that sshd seems to fail on 3.4 kernels now which means that you can't log into the device via ssh.

client_loop: send disconnect: Broken pipe

I managed to enable telnetd (sidenote: I documented this on the wiki so it should be easier in the future to do the same) so I can investigate better on my device, this is what appears in logread when trying to log in:

auth.crit sshd[1770]: fatal: privsep_preauth: preauth child terminated by signal 31

Even with the most verbose logs from sshd (/usr/sbin/sshd -ddd -e) I don't see anything that's telling me why it's 'terminating'