Ironworks online: Everyone else is listed and disconnected and I am listed as migrating...

This means that I am the one that disconnected, right?  Or is it the host that disconnected when you get this message?  This has happened now in two out of the three epic games with eight players I have been in after about two hours of playing (maybe more like three hours the first time).   Both games I was rolling over my enemies, so this is a bit frustrating.

I have been playing multiplayer games that run all day for a long time (mmorpg's, civ 4, supreme commander (over and over), homeworld 2, kohan 2 and many others), but I rarely disconnect from those games.  I have managed to finish a couple of shorter Sins games, but I think these larger games are really fun and I want to reliably be able to finish them, especially when I am winning...

Does anyone have any tips on how to make the games more stable?  One more piece of info, I changed my port assignment to 5112 because WoW is on the same port they tried to assign to Sins.  Also, I am behind a NAT Router and the game says that I am unable to host (although I rarely have trouble joining a game).

By the way, great game!  I have been hooked since release, and playing with humans has made it even better, except for this disconnecting issue...