I just re-installed XP, and downloaded PrevX 18.104.22.168, installed it with my license and let it run with default settings. Every time i reboot, and launch certain apps PrevX pops up that little notification window saying it's authenticating files related to the program. It used to do this before only for new and unknown applications. Basically every time i launch, say, TQVault (item storage app for a game) PrevX delays the startup by authenticating all .dll files TQVault uses. Same goes for the executable file of NewsLeecher, a binary newsgroup reader. It doesn't do it again until i reboot, at which point PrevX seems to forget it already scanned these files. If i understood correctly, PrevX checks a new and unknown file for odd behaviour and against the cloud (?) and after declaring it good, it doesn't scan it again unless the file changes. Do i have to lower the heuristic settings or something, is PrevX tuned to be more sensitive and aggressive with this new version than before? As said above, all PrevX settings are on default.