Dear all: I had been running both BIND 8 and Squid under SuSe 6.2 until recently when I switched to RedHat 9 with BIND 9 and Squid from the 3 CDs. Both in the old SuSe and new RedHat 9 now, I configure BIND to use forwarding by adding to /etc/named.conf this: forwarders { N.N.N.N; // The IP of ISP DNS Server }; forward only; Now, BIND 9 always prints these errors below into /var/log/messages: --- Oct 29 11:09:37 nslinux named[2787]: client 192.168.1.154#1264: updating zone 'my.office.org/IN': update failed: 'RRset exists (value dependent)' prerequisite not satisfied (NXRRSET) Oct 29 11:09:37 nslinux named[2787]: client 192.168.1.154#1267: update 'my.office.org/IN' denied --- And my 1 Mbps Internet connection (leased line) has always been saturated since the switch-over. I don't know if that is the DNS forwarding problem or a worm/spyware on my network. Anyone has an idea? Hope for your kind and helpful response. Regards, Vidol