Was doing some pc cleaning today and noticed that this file is being opened read and closed about 150 times a minute. After some a little browsing it would seem as though it's used to maintain ZA registration information. I understand wanting to ensure people are using legitimate versions, but checking it twice a second seems a touch excessive. Your autoupdate.exe was thrashing about 4 times that often, that was easy enough to disable however. Anyways, would be nice if in future updates this could be looked at.
Operating System:Windows Vista Home Premium
Software Version:7.1 (Vista)
Product Name:ZoneAlarm (Free)