I use to play 10 minutes games. However, ChessCube automatically disconnects and reconnects me from the game several times a game. I get disconnected for only 1-2 seconds each time but this is enough to disturbing. I had also had an opponent yesterday who actually used this in his advantage: I was clearly winning, so he disconnected. Since I have got again disconnected/reconnected, the engine treat my involuntary disconnection as a resign..
I didn't find the right solution from the Internet.