Hello, just wondered if anyone could help me out here. It only happens with ZA, because I have recently used Commodo firewall (Don't really like it) and installed the ZA's free firewall today, but what I notice when ZA is on, I can hear weird screeching noises through my headset when my computer is loading something through the internet. I know it's ZA because I can close it and the noises go away. I do have the latest drivers for my sound and everything I checked. Can anyone help?