ljk: I don't have to wait for settlement to trade the proceeds of a prior trade at either Waterhouse or Brown & Co.
I agree that is the case more often than not with a "margin" account for transactions involving margin-able equities, but if the securities you bought and then sold are "non margin-able" you may have to wait, depending on how quick the transaction settles. I was just trying to cover all bases.
If someone is sending you harassing and threatening emails from IHub, you should make those emails public to expose the nutcase and if they included death threats even veiled ones, I would contact your local police department and the FBI immediately. I would also share those with IH Admin Matt. I am sure he does not want someone posting on his message board that is emailing another or other members death threats even veiled ones.