Blocking DNS Queries to root Servers (Score 1)

Does anyone know if along with their redirect they are also blocking DNS quires to the root servers? I am running BIND 9 in my house and using that for all my DNS queries. I was away last week traveling and when I returned my DNS server couldn't query any of the root servers. The server isn't exposed to the Internet but is strictly used internally to support Kerberos running on the same box. It would really blow if they've also put a stranglehold on local DNS servers. Why in the hell would they do something like that? Anyone else experiencing this?