When I'm connected to the internet, if I close the lid or go to the home menu with the game still on, I get Error code: 003-4099 and the internet portion disconnects and I have to reconnect. Anyone else having this problem?
That's a normal thing, to be honest. Your 3DS loses connection to the net when you press the home button or put it on standby. Same thing with the Vita. It doesn't mean that you have a crappy connection or whatnot.