>>No, not for sure. I suspect that something changed on the site and it is doing something on load that disturbs Norton.
>
>It's the opposite. Norton released a new update and this is what caused it. See my other reply in this thread. I also adjusted our Troubleshooting page to provide some information on the issue. Hopefully, this will all be resolved by next week.

I saw your reply after I had posted my comment. I knew something had changed somewhere.