I'm running 870.2. In the past couple of weeks, I've had several TWS "pink-outs", where the TWS and booktrader grid go pink, but TWS is not trying to log me in again. The data in booktrader is still being refreshed, but any orders placed or cancelled do not go through to the exchange and orders filled do not register until the pink-out is over. I thought that this was an internet connectivity problem, as I've been having such problems as of late; however, the one I just had this morning was not an internet problem. I've seen comments on various threads citing lost connection problems with recent versions of TWS. If you've had such problems, are they similar to the one I described above? What is the last stable version of TWS with no such problems? Thank you.