Does avast free still throw up ads occasionally from their free product? I have a few people (non technical) that I would like to use it for but they will freak if they see one of avasts misleading screen come up (hey unless you buy avast premium you have serious security issues). I know they won't be opening the program manually and doing a scan or anything like that (because avast is almost acts like scareware when you do that). Also does avast free upgrade major versions without any intervention from the user or does it require this to be done manually?