After reading another thread on web scanners and seeing avast! recommended as one of the fastest I thought I would try it out. I installed a trial of the Pro version and I must say I am very impressed with the lightness of it. It is like running nothing at all. Especially on my 64 bit machine. It looks like it rates pretty highly on detection lately, but since I have never used it before, I was wondering what kind of luck others have had with it. I intend to keep it through the trial period and maybe purchase it afterwards if no problems come up between now and then, but I have to wonder if something this light is effective. Is this a good quality product worthy of my money? And before anyone says it, no, I am not interested in the free version... Thanks.