You're referring to my post? For me, I had temporarily disabled the Advanced heuristics box (enabled by default) in the Web access protection in order to test out the configuration as suggested by gisuck. However, I am surprised that you have Advanced heuristics enabled initially in Real-time file protection as by default it is OFF, and when I try to turn that ON, it gives a warning about adverse effects on system performance. Right now my configuration is advanced heuristics enabled in Web access protection but disabled in real-time file protection. The scanWhenDone in Firefox has been false for a long time as well, and I still have freezing issues-> waiting for Marcos to get back to me regarding the videos which I posted earlier today. Anyway, did you manage to resolve the issue on your computer after what you did?