Dunno if this is known, but another tip I have concerns the constant disconnect from game server when playing on ps3. A lot of my friends confirmed, that they never have troubles playing online over wireless in any other game. When it comes to FFXIV however, they started using the wired connection. 6 out of 7 people confirmed once they used the ethernet cable (wired) they never got a DC again.

Figured, I'd let you all know, since it's a tips thread.