sounds like you're having problems with foo fighters! They're actually historical, you know?
No srsly... I had my fair share with disconnects as well. I didn't test it extensively, but each time I got dc'ed, I was up above 20000ft (Spit I). Could the DCs be somehow related due to 'being out of the flight envelope'? We do already know that 1C defines barriers rather awkwardly (for 2-D-clouds f.ex.), but then again, it's probably nothing.
Maybe it's just my connection or I need to open some special port or something.