Marti - thanks for the notes on ZA5.1, most of which seem to be about correcting problems, though a glance at the ZoneAlarm forum sugests that there may still be some unsolved.

After a disastrous day trying out Kerio which proceeded to block my access to almost everything including its own uninstallation (OK - I probably went wrong somewhere!) I managed to get back to ZA4.5 Pro with another year's subscription paid for.

I'm very happy as I am, but my question after all this preamble is - does ZA5.1 provide any more protection to my computer than ZA4.5?

Thanks as always in advance