OA Free was causing Skype to crash, so I’ve gone back to ZA Free.
The newest version of ZA is fantastic!
ZA is the only trouble free software firewall.
Again you forgot to suffix, in your opinion.
I have never had any hassle from The outpost firewall (Free or Pro), the only trouble free software firewall in my opinion 
(1) Didn’t you go over to Online Armor because the last version of ZoneAlarm had issues ???
(2) You should say that over at the MBAM forums, it’s ZA that is causing system freezing when running MBAM Pro :o ;D