Hi: This was on freshly formatted machine. I did maximize or optimize the setting by chosing more stronger protection then the default setting. For example I chose for 360 to scan all files and checked all engines to be active. I do not know why this issue happened but as you can read I am not alone. Anyway after this problem I was forced to unistall 360 and install AVG internet security 2013 and all is well and peachy. Also I never has anuyissues like this with baidu or kingsoft and any other security products. In the future I may give it a try, when it is more mature or known better. For now, AVG IS is the way to go for me. My system is windows 7 ultimate 64bit dual core AMD Athelon 250 with 3GB ram, 700GB harddriver, Nvidia geforce 6150. This is the spec of the system that i tried 360 on and had issues.