I have discover a costly flaw in the trading window of the cybertrader software. (Make sure you upgrade to the latest version.) If you try to enter an invisible limit order through inet and you do not enter maximum in the max. box the amount in the price box will default to the best ask or bid. This does not happen immediately and if you see your limit price is the same and then hit the buy button the limit price will change to the best ask and will then be sent. I found out the hard way and even though they admitted it was a software issue that has been fixed they were only willing to refund a portion of what it cost me. Anyone know an attorney familiar with brokers?