dstiles - 9:54 pm on Jun 20, 2011 (gmt 0)
I wouldn't have expected a "hog" for DNS. Have you hardened it against attack? I forget the details now but a Bing should get them... :)
Apart from that it's been a while since I ran a local DNS server here and that was on Windows.
I used to use a USA service for primary and secondary DNS ... it's been so long I had to look it up: ZoneEdit.