So people only used it for 505 minutes (about 9 hours) in the first month of ownership? How, again, is that bad? 505 minutes is about 17 thirty minute sessions, which is an absolutely fantastic rate of working out (nearly 4 times per week).
We haven't used ours all that much -- maybe 6 or 7 hours, but primarily because we're busy playing Mario Kart Wii when we play games. Wii Fit still gets more use than the brand new Xbox.