I must have just been lucky to not have any problems using Vista and XP.
I did a little search and found this:http://www.neoseeker.com/forums/22121/t111...s-server-error/
Not sure how effective it'll be and some replies have other solutions.
I wonder if it does have anything to do with Norton even being on there, I had a horrible time with it. Even simple checks on updates it wasn't letting connect. If you can try completely shutting it down, not just the firewall, then see how things go.
Anyway I hope this helps you get sorted.