How can i set an NTP Server for the appliance?
From Libra Esva version 18.104.22.168 there is an option under menù System->Networking and System Settings.
To setup, login as root in console or from ssh and:
# chkconfig –levels 235 ntpd on
# ntpdate ntp.ien.it (or whatever server you would like to use)
# service ntpd start