Hello. This newest version is fantastic. Last beta would not scan e-mail but everything is working great for me now. I know that behavior block is not suppose to block but it has for me with no problems-- dont know what to say but glad-- I have it on ask and no problems as others are having. xp sp3ving. Used avast for years and never let me down- for me that is what matters. Very happy for VLK and everyone at avast-- each version gets better and better. I had free versions for years,but last year went for paid pro first -- more out of gratitude, and then got AIS-incredible to see advances. Will be renewing this coming March.Am running Sandboxie(auto configs for avast) and Winpatrol pro--- if anything gets past all this-- oh well--anything more would be overkill-- the three play well together--perhaps other programs for others are part of the problem-- such as p2p. Again thanks to avast.