There are two ways they could have programed that :
1) To make the servers collect the registered and close themselves by August 12th (A lot harder than the other method but more likely)
2)To let the 3DS itself do all the work, nintendo is based on the 3DS's clock (Easier than the first one, it's the lazy route it not very likely but if that happened two times you can't denounce the chance of it happening again.
technicaly it is possible you can't say that it isn't. you can say that Nintendo aren't that stupid.
QUOTE(uriyasama @ Aug 5 2011, 01:37 PM) I'm not against you, what I'm saying is that there is a chance they didn't notice that mistake.