Quite interesting. Which program version of Avast are you running? Because I’ve discussed this on another forum and a majority shared my experience. And those who said that they hadn’t noticed any delays, it turned out that they had only upgraded the virus definitions and ignored installing newer program versions of Avast. While at it, which Windows version are you using? 7, 8, Ultimate, Enterprise, Pro etc and is it 32 or 64bit? Intel CPU?