I'll mention this to the OmniPlan team when I get into the office (@home at the moment), but if you need a guaranteed response to an inquiry, you'll want to send email to the
support ninjas. We all browse the forums on an as-we-can basis, but if you email us, you're guaranteed a response ASAP.
(If you click the status bar at the bottom of the OmniPlan document window, it'll show various aspects of your project: Start/End date, % Completed, Cost, & Total Duration/Effort. I'm unsure if there's a window that aggregates all that info in one screen.)