I made a thread about this myself on here a while back:
http://forum.square-enix.com/ffxiv/t...339#post393339 (full system info posted there, including screenshots)
This is the epitome of frustrating. I am one of the players that has no problem with paying for this game when subscriptions start but, if I can't even reliably stay on, then I can't justify paying for it. It's annoying on its own when it just happens while running around town but, when you're in the middle of a Levequest, synthesis, or Battlewarden run and lose out on the entirety of it from this error, it's beyond frustrating and more like angering.
This really needs to be addressed on the whole BEFORE subscription fees start. Why am I going to invest the money and time to play if I can't be assured I can actually play? I'm at the point where I am hesitant to even do a Levequest, Battlewarden run, or synth because I might lose out on it. And every time I lose my connection in the middle of one of the these three scenarios, I just feel like "forget this crap" and go play something else. I can't imagine that's the reaction SE wants from their game or any other new players that encounter this.