OS X Leopard Slow-loading Pages After Installing New Wireless Router

I started experiencing slow loading pages on my iMac (Leopard) after changing routers. I had a pretty good idea that the culprit was DNS as the browser would take 5 to 10 sec to resolve a domain, while pulling up the page via ip worked great. The resolution was simple. Pull up OS X network preferences, DNS tab and remove any stale DNS server entries (remove all if in doubt). Worked like a charm. Hopes this saves someone some time and frustration.