As far as I have seen, the only difference between a clean and upgrade install is that an upgrade retains (some of) your existing settings.

In any case, the ZoneAlarm install directory & /windows/system32/zonelabs/ directory are wiped out & recreated (in total), even with an ugrade.

(Well maybe there is a bit more too it then that?)


"Remember the last tab visited"

I would think most? people would be interested in the programs that have or tried to access the network. And most do not care about having "a central area for many security products". They simply want a firewall & want to see what has been knocking at its' door.