I have only been using IB for a short time but I'm already dying to go back to a real broker with Realtick. The commissions are great but the software stinks. Today I tried to grab a stock right at the bottom, I bid .20 cents above the best ask with best ecn. There were plenty of shares on several ecn's (I was watching on level 2) and trades were going of .15 cents below my bid. But the order just froze., No execution and when I tried to cancel, It wouldn't cancel either. I called support and they lay the blame of on ARCA getting hung up. After everything I still dont know for sure if the order cancelled or excuted or anything. Arca told them they can't find the order but that doesn't mean anything. They better not tell me tommorrow that I was actually executed because the stock went up almost a point from where I tried to buy it but now tanked much lower. I was under the impression that with best ecn limit orders, it either hits another ecn if the price is within limit, or goes and sits on the island book, so I dont understand how it could possibly have gotten lost in the arca system. Has anyone else had these kind of problems with IB. I can put up with just about any technical problems with brokers, but not knowing whether I'm in a position or not, is unexcusable. What a waste!