Interesting, thanks for the report! Looks like this has something to do with how Wine (perhaps that specific version, not sure) sometimes terminates the server connection! So the OS is definitely relevant and probably why we haven't heard of it yet--this doesn't happen on Windows (and doesn't seem to happen for the average Linux player, either...). I'll see what I can do.
Edit: I've added a new hackish method that should prevent this in the future, let me know if you see it after the next public update.