NTP
From Wikitech
to fix it on Fedora core:
- edit /etc/ntp/step-servers - init.d uses it
- chown ntp:ntp /etc/ntp
other problems:
- make sure server (either 10/8 or ext ip) is correct in ntp.conf
- FC3 only: disable selinux (/etc/selinux/config) (is this not needed if /etc/ntp ownership is correct?)