ntpd -s will time out eventually, but the 'eventually' might be painfully far away. it's the dns routines that block and cause these problems. i know how to fix this but haven't found the time to do so yet. maybe i get a chance on the flight later today. maybe.
?"DNS routines" means that the problem only appears if you use a ntp server with DNS? ?Can you avoid the problem if you use an IP directly instead of DNS record?
-- Thanks, Jordi Espasa Clofent

