Users are getting a lot of delays loading web pages or page not found errors drilling down within websites. Using only the ISP DNS addresses, the page load is very fast. Routing web traffic from internal systems using the local DNS have the page load problem. I added the ISP DNS addresses in the third and fourth slots in the scope option for Name Servers and while browsing improved marginally, several internal systems were unable to resolve local network resources, inspite of a secondary DNS server and WINS. Removing the external DNS addresses resolved the internal resolution issue but the slow browsing continues. These are MS DHCP and DNS addresses.