PS0 WiFi Error Codes

I've been playing Phantasy Star 0 on wifi since it was first dumped, and I've never really had any problems, but for some reason, as of tonight, I'm getting every error code in the book! I've gotten 91010, 71010, and I get 86420 more than ANY of them. The official Nintendo site said that 86420 may mean it's because of my firewall, so I turned my firewall OFF, and I still got the code. :-\
What the heck's going on??? :'(Sorry if this is the wrong board, it just didn't seem like it'd fit into the Tech help board.

I have only ever gotten error code 52000, even tonight. Maybe your router is acting up?

I just realized, it doesn't mess up on Free Play.
It only messes up when I play with friends...? Come on, dude. :/

anti virus?