Quote from kjkent1:
HOWEVER, there is this little thing called "proof" that bears on this sort of case. Can you prove to a court with credible, documentary evidence, that the computer system actually permitted you to trade 8/1 margin? If you can, then you have a case -- if you can't then you don't, and it doesn't matter one whit what the truth of things are, because if you can't prove something happened in court, then it didn't happen, as far as the court's concerned.