It's been a while since I last saw a post regarding IB"s Forced Liquidation. I thought perhaps they have finally put their act together. I was tempted to open an account with them until I came across these recent posts on yelp about IB... http://www.yelp.com/biz/interactive-brokers-llc-greenwich by Jay J. He only has long options (ie zero margin). But IB s/w bug miscalculates the margin and lock up his account. by Matt C. He was auto/forced liquidated on defined risk credit spreads even with more than enough liquidity in his account. I've also read that on ET? someone was forced liquidated beyond the max possible risk of a defined risk spread. How is that possible? IB leg out of the trades? Wow! How could this company stay in business?