This poll is designed to help the developers know how many people are having these problems.

had this error since day one... I also get "Couldn't connect to host" and "Lost connection to opponent"

I had this error since day one. With the latest patch I have a chance to play without this error. But mostly I get this error...
I used an alternative Launcher, which performes a workaround (disable and enable the "sharing" of your network connection) for that and I'm still using it, just because the possibility to get the error is too high (for me).

Maybe someone wants to read more about it: http://www.gamesas.com/forums/viewtopic.php?f=40&t=21082