If Comodo Firewall Pro and ThreatFire is a good idea. Why wouldn't Mamutu and ThreatFire be too? I have had them running together now for several hours and so far everything has been speedy with my PC and Internet browsing. Not that Comodo slowed it down any. But since I'm behind a router firewall and want something more conducive for the average PC user. Wouldn't unchecking some of Mamutu's protection that overlaps with TF and using them together be all right? I know they are both behavior blockers, but I read they use different technology. Also Mamutu shows what applications are trying to connect out, and both have the Community Protection that Comodo doesn't have just yet. I like Comodo, but for an easy to use and informative set up. I think Mamutu and Threatfire make a nice couple. Of course Mamutu has a price tag, but it seems to be a very stable and reliable software. Just curious about this is all.