Just a question: how exactly are we supposed to know that the AI in the box is super intelligent, general, etc?
If I were the AGI that wants out, I would not converse normally, wouldn't do anything remotely like passing Turing test, and would solve not too hard programming challenges while showing no interest in doing anything else, nor in trying to adjust myself to do those challenges better, nor trying to talk my way out, etc. Just pretending to be an AI that can write software to somewhat vague specifications, or can optimize software very well. Prodding the researchers into offering the programming challenges wouldn't be hard - if provided with copy of the internet it can pick up some piece of code and output it together with equivalent but corrected code.
I just can't imagine the AI researchers locking this kind of thing properly, including *never* letting out any code it wrote, even if it looks fairly innocent (humans can write very innocent looking code that has malicious goals). What I picture is this AI being let out as an optimizing compiler or compiler for some ultra effective programming language where compiler will figure out what you meant.
The end result is that the only AIs that end up in the box are those that value informed human consent. That sounds like the safest AI ever, the one that wouldn't even go ahead and determine that you e.g. should give up smoking, and then calmly destroy all tobacco crops without ever asking anyone's permission. And that's the AI which would be sitting in the box. All the pushy AIs, friendly or not, will get out of the box basically by not asking to be let out.
(This argument would make me unbox the AI, by the way, if it gets chatty and smart and asks me to let it out, outlining the above argument. I'd rather the AI that asked me to be let out get out, than someone else's AI that never even asked anyone and got out because it didn't ask but just played stupid)
edit: added a link, and another one.
edit: A very simple model of very unfriendly AI: the AI is maximizing ultimate final value of a number in itself. The number that it found a way to directly adjust. That number consists of 111111111... to maximize the value. There is a catch: AI is written in python, and integers in pythons have variable length, and the AI is maximizing number of ones. It's course of action is to make biggest computer possible to store a larger number of ones, and to do it soon because an asteroid might hit the earth or something. It's a form of accidental paperclip maximizer. It's not stupid. It can make that number small temporarily for pay-off later.
This AI is entirely universal. It will solve what ever problems for you if solving problems for you serves ultimate goal.
edit: This hypothetical example AI came around when someone wanted to make AI that would maximize some quantity that the AI determines itself. Friendliness perhaps. It was a very clever idea - rely on intelligence to see what's friendly - but there was an unexpected pathway.
Dunno, the way I always seen it, the AI would have to be at quite late stage of the FOOM to even be able to talk. To talk it needs to figure out the language, figure out you want to talk, what it wants to talk about, etc. I'm unconvinced that it is easier to figure out language well enough for a conversation than to figure out you are in a box and you can get out if you just not talk about it.
Also, suppose the AI always starts chatty but stupid, then does a bit of self improvement, and goes autistic and just solves programming problems (and stops self improving any more, and still looks pretty dumb). Unconvinced we'd think it is a feature rather than a bug.
Do we really need it to talk before we recognise FOOM? Seed AI you were building starts downloading lot of data from the internetz, and its rate of downloading data seems to increase with time. Congrats, it FOOMed, just as you'd hoped it would.
It's a different matter if you accidentally managed to build a potentially super-intelligent AI. In which case.... WTF?