What is the differences in free Zone Alarm firewalls versions 2.6, 4.5 and 7.0? Is the newest release of the free version much different than the past versions? I currently have NOD32, SSM and SuperAdBlocker w/SAS. And I am essentially wanting an easy to understand, lightweight firewall that also passes basic leak tests and is stealth on the internet. I have tried Comodo, Kerio, Jetico and I think pretty much every other firewall out there. But I like the internet lock feature of ZA which seems to be missing from most other firewalls. Plus I think SSM can help in the "leak" department. If that is not so, please someone let me know otherwise. Would anyone know how much memory each of the ZA free firewalls use? Is any of the three better than the others? I saw the download for ZA 7.0 is like 30 MB's but I believe that is because it includes the ZA security suite that people are reminded to upgrade to. Does it run that heavy? Any thoughts? Thanks, as always.