There is already a system that implements the idea of "turn it all off unless it is approved and the re-approved," similar to what the "allow unapproved applications" might be and is one of the more...disliked features in a competing OS: the user account control (or whatever the UAC acronym expands to) in Vista.

But I could be wrong and it wouldn't be that annoying or concerning (the warning is identical sounding when you disable it to be able to use your computer without being asked 5 times if you really want to run that application).

And I too would have issues with needing approval from a 3rd party to run ALL my applications. Let me trust the company that writes it and go from there.