From email support sent me: "QT is currently in the process of being drawn down. The tentative date for this is June 15th, 2012. A business decision has been made to cease support and maintenance of QT, so we are trying to integrate as many features as we can in to ThinkOrSwim from TD Ameritrade before that happens. When the drawdown is complete, QT will no longer be supported or maintained. In the meantime, we recommend trying out ThinkOrSwim. If you need any assistance with it or a walkthrough, just let us know and we'll see if we can get someone at TD Ameritrade to give you a call. For that, you would need a TD Ameritrade account, so if you have one, let us know the account number or userid (please do NOT send us any info other than that like password), a good phone number, day and time to call, and the timezone you're in."