pne.nu gets NS service from ns.frogspace.net (where the web site is hosted) and ns.granitecanyon.com (where I had parked the domain until I decided where to host it).
At the moment, ns1.granitecanyon.com is saying authoritatively, "pne.nu doesn't exist", while ns2.granitecanyon.com is simply not responding. Much suckage ensues.
/me considers deleting granitecanyon.com from the list of registered DNS servers for pne.nu, even if this means spending money to NuNames ($5 or whatever it is they want).
Edit: $10... bloodsuckers. At least some of it goes to my favourite Pacific island.
Edit 2: Done. (And changed the IP address for ns1.frogspace.net, while I was at it; I see that it has changed. Also removed my fax number since I haven't bothered installing the fax software since I reinstalled Windows.)