First off, when you update Nintendon't from the app and press the home button to restart, it throws an exception (DSI) error, and second, everytime I complete the destroy the black sedans mission in Simpsons Hit and Run, the game freezes up when I try to save. I'm gonna try updating Nintendon't manually and see if that fixes the problem. I'll report back my results soon (and yes, I'm capable of posting on other days. Yesterday was a coincident)
EDIT: I updated Nintendon't manually and completed the destroy the black sedans mission in World three in Hit and Run and I was able to save the game, so that works. Still is worth checking out why Nintendon't throws an Exception (DSI) error when you try to restart Nintendon't after auto updating from the app unless that's been fixed in version 5?