I have been using the Zone Alarm free firewall for many years now and have been very satisfied with its performance.
I recently received an invite to download the latest version of ZA free firewall and downloaded it. Since then my computer regularly freezes and a power off re-boot is the only option. I have now disabled ZA at startup and all is well, as clearly I could not continue with it in that state.
I am using Avast security software too, but so far I have not had any interaction problems. Any thoughts please?