Quote from roctrend:
I was UPGRADED WussBAG, the prices were stale all night intermittently on varios contracts and early on new version.
How many days has the TWS given you the "warning: we are forcing you to upgrade soon" message? Could you not have upgraded at your leisure (i.e., when real money was not on the line) instead of the night before - to make sure that nothing adverse would happen when you did upgrade?
IB might be responsible for bad software or market data, but I would claim your unpreparedness is also to blame.