I have just tried a new idiot proof set up for the last few weeks. My wife is using an old laptop with XP SP3. I have installed Comodo Security on it with Antivirus disabled( not even installed), FW allow in and outbound with windows firewall enabled and also a hardware firewall in my router, Auto-sandbox is enabled along with viruscope and cloud.( I could not however resist to add MBAE free with it although I guess it is not needed). This is an almost zero pop up security set up with really strong security. So far it is working good without any significant system impact. However I must mention that my wife is a very very safe surfer. I am really curious how this set up will work with a high risk dummy user. This set up is supposed to sandbox any malware without any pop up alerts and should keep the system clean. I will love to try this set up for a high risk surfer.