I run Prevx heuristics at maximum, and I understand that this can create a lot of FPs. That said, I thought you might be interested in this... A few days ago I installed an avast! upgrade (to v4.8.1356). I run a scheduled daily Prevx scan and it has not alerted on any avast files. Just now I ran a Hitman Pro scan, with Prevx Edge protection active during the scan, and Prevx lit up on about a dozen avast files. This same thing happened about a month ago as noted here. At the time I was asking if you would consider a 'Select All' choice in the Detection Override section. I'm dealing with the same situation today. I don't understand why it takes a Hitman Pro scan to make Prevx hit on these avast files? And as I said, I am sure the FPs are due to my heuristics settings being high... but don't you guys make adjustments for new versions of programs like avast? Anyway, I wanted to document these Age/Spread Criteria Violation FPs in case there was something you wished to do with them.