S
sony
Sygate Pro Firewall v5.0 is brilliant, and doesn't eat resources, allows you to easily add IP blocklists such as Peer Guardian, with a few clicks which is great if you need to do this, there's a backtrace facility so you can look up who's scanning your box, go for Sygate! Oh yeah, I've heared Z/A contains spyware/scumware, but I don't know if this is true.