> I've got a couple of servers, which have started kicking me out of the
> ssh connection just after I enter the correct password, basically I
> get prompted for the password, then immediately the following message
> appears;
> "Read from remote host Connection reset by peer
> Connection to closed."

Have you checked the system logs on the server side? Often this means
your SSH login was successful, but that the system login failed due to
an invalid shell, missing home directory, or some other reason at the
system level.