I just tried Sygate
I used to use Zone Alarm (free version). This was about a year and a half ago. About every six weeks it would knock me clear off the internet - for good. The only solution was to uninstall ZA, then manually clean every trace of it from the registry.
I decided that I might as well let the hackers wipe me out, rather than do it to myself. (I am behind a Linksys router, so I'm not totally exposed).
I installed the free version of Sygate earlier this week and have been very impressed. (Forgot to tell it to allow F@H access, which cost me a couple hours folding, until I woke up and noticed it.)
I have heard nothing but good things about Tiny Personal Firewall, and intend to try it on the computer I'll be putting together next week. (Got to make up for those lost folding hours

)
Prof