I also experienced the same early this week, the connection dropped about 40 minutes, my ATS could not manage the orders, which turned a small profit to a small loss. This does not happen frequently but can be very annoying.
Quote from gangof4:
not a perfect solution, as the SGX and HSI feeds were down for like 90 minutes earlier this week. thankfully i had just closed a position. it's messed up that IB is 'global' but has VERY limited customer service options for those who trade the Asian markets. given the volatility, i am looking for a better solution, as IB could wipe me out some day (even a modest position can do some serious damage when a market can move 400 points in an hour...).
. I didn't even think to pick up the phone as it wasn't something really urgent, just annoying as I didn't know what was happening.