Hi Marc,
Seems there's still an issue with ns3.hub.org:
http://www.dnsreport.com/tools/dnsreport.ch?domain=postgresql.org
Default Server: nysrogh.vale-housing.co.uk
Address: 192.168.1.9
> server ns3.hub.org
Default Server: ns3.hub.org
Address: 200.46.204.254
> set type=NS
> postgresql.org
Server: ns3.hub.org
Address: 200.46.204.254
*** ns3.hub.org can't find postgresql.org: No response from server
Regards, Dave