I have recently installed Bit Defender Internet Security 2008 and am currently trialing it. Previously I was using free AVG antivirus and Zone Alarm firewall. I also run Iolo System Mechanic, which used to recognise both AVG and Zone Alarm as actively protecting my system. However, since I installed Bit Defender, System Mechanic does not appear to recognise any active virus or firewall protection on my computer. I'm fairly sure Bit Defender is installed and working correctly as the boxes are ticked on the status page. Are there any known conflicts between the two applications?