Testing Norton DNS - Verification Failed

I have Windows XP Pro SP3 and I have an issue of being unable to verify that Norton DNS is working properly.  I have the Norton DNS IP addresses properly configured on my home network Router.  I have left each of my Windows XP Pro PC's set to obtain a DNS address automatically.  I ran the Norton Test Page with both Firefox 4 and Internet Explorer 8.

 

http://setup.nortondns.com/

 

I do not feel comfortable using Norton DNS without verification.

 

Any ideas on what may be the problem?

 

Thanks in Advance.