peculiar lookup timeouts

[Shaheen]

Adam Young wrote:
> Hey guys,
> Running Bind-9.3.2P1, three servers: ns1(master) ns2,ns3(slaves).  Every
> once in a while a customer will call in saying that they cannot resolve a
> particular domain.

Am having the very same problem and also when i restart named
everything returns to normal.
i figured it was becuase the PIX firewall ASA which blocks queries
bigger than 512 but even removing that rule didn't work.
now I temporarly configured a BIND 8 server and forwarded public DNS
servers to it.
anyway my error is server failed not timed out