This isn't a Server issue, but a networking issue within Snow Leopard. Hope I'm in the right place. Just got my mbp back from the Apple store - in for logic board replacement, no other changes. DNS seems to have stopped working - I can access my gateway, I can ping my provider's DNS servers, DNS addresses are assigned via DHCP, and these are working on a second Macbook on the same WiFi and wired networks. All DNS queries fail - dig tells me no servers can be contacted. If I dig @server_ip for my provider's DNS server, I get the correct list of roots. If I "sudo dig" I also get everything back correctly against my provider's DNS server. nslookup seems to behave the same - no servers unless I run under sudo. Comparing settings between my two machines, all looks normal. DNS server addresses and network settings match. I've bounced the mbp a few times, played with mDNSResponder a bit, but didn't find anything useful. I tried creating a new profile (another admin profile, same as my "standard" account on the mbp), and the behavior is the same. Any ideas why all of my dns queries fail unless I execute them under sudo? Thanks!