I, unfortunately, was recently talked into "upgrading" my DSL to U-verse - so I could save 5 dollars a month. I have encountered an issue with the NVG510. Try as I might, I am simply unable to envision a situation where it would be beneficial to lock down the DNS configuration so that a person is unable to change it. What is the purpose of it? Is there a way to "unlock" this so you can manually change your DNS servers without having to bridge another router? Had I known this was going to happen I would have just stuck with my old DSL - it was half the speed that it is now but at least it was functional.