Got directed to the site via the official NA playstation forums, having the same Network error problems.

Actually, for some reason I haven't been able to connect to the online lobby since the game's launch. Always gives me the "Network Error" screen on my default user/PSN ID, yet if I log in on a random newly made account, it goes to the lobby no problem. So because of this, I know it's not my network settings or anything.

This is the only game that has this strange problem as well.

Whats messed up is that a new expansion to the game is set to release, and I still cant play online