You should try to change it then to roaming ones. It is a bit slower by the logins (the first could be much slower if there's a lot of files in the profile), but I think it could work, as this way the user profile will have all the settings stored at the client side as well, not only the server side.
And I think this could be the problem here, as Norton Online Family needs a "kinda-normal-looking" user profile in this scenario, and with roamings you will have it. (In theory :P).