I set mine up as an administrator and another user as a standard user. My Yahoo Mail works perfect as administrator but won't open as a standard user. A pop up said might not work correctly if a windows firewall was not used. Don't know if it is the problem but Norton was set as default ,by the factory, and windows is turned off. Can I turn Norton off as default, within the computer, and keep it for the web? And how would I do this? George