This is weirdly incorrect for a number of reasons. Firstly it's not simply a domain change. There's very good reason to believe that the architectural problems

This is weirdly incorrect for a number of reasons. Firstly it's not simply a domain change. There's very good reason to believe that the architectural problems MTGox are facing today may be due in part to re-using not fit-for-purpose code, from the earlier revision of their product. Yes it never went live, and yes it's new people now; both of those things are irrelevant unless there was a complete code re-write at some point. On to your next point, there certainly is a problem with being in over your head if you're dealing with financial trading. Some industries are not suited to amateur attempts, period. Think of the amount of litigation MTGox are opening themselves up to, not just in terms of people who use them, but based on the wider impact to the BTC community if they really stuff things up. Not good if they can't show due dilligence beyond "LOL we're a startup, what do you expect?".