For Avast users, be sure to manually update Avast before installing the updates to ensure you have the latest definitions
Reported by ky331 at LandzDown:
Avast definitions 14-08-12-0 was generating a plethora of F/P (suspicious EVO-GEN) warnings for the DOT NET 3.5.1 Framework update. It has (allegedly) been fixed with the release of avast definition update 14-08-12-2