Well at first I thought that was the issue too, but I would see the same thing if I hosted. It might be that I don't get disconnected but my friends might and it could be all of them or one. I haven't experience this in MP but numerous times in Garden Ops both joining and hosting. I know disconnects happen when you play online, but the times I get frustrated is when we are having a good battle and were lucky enough to get a bonus garden or the 3 1000 blue diamonds.
I have seen that message but the one I've seen says something about EA servers. I don't recall the exact wording but I'll keep an eye out for it and let you know.
If its happening when you are in Garden Ops with friends also check your nat settings as well. Make sure you are on wired connections instead of wireless can help as well.
