I use Norton 360 and after a clean install of windows 8 pro, I installed directly from Mynortonaccount a clean install of 360.
When I launch IE10 from the desktop in Win8, with the toolbar enables, first I get a message that says I can speed up browsing by disabling slow addin's then I wait and eventually have to close IE10, the reopen and disable the tool bar for IE10 to work. I have not tried Firebox yet, but will let you know if it works there. So much is a mess since Windows 8, Identity safe won't auto fill either.
If someone has had this problem too, please post some points. I don't think Norton 360 is compatible with Windows 8, or maybe it the other way around... With all the limitations Windows 8 has I may be just going back to Windows 7...