You may have a transmission problem there. Usually going from 40-60, your car should sit comfortably in 4th gear or at least move from 3rd to 4th. In reference to your first problem, if you're sure the belt's making the noise, then you should ask the Honda mechanics to check over the problem. They usually conduct free quotes on any problems you may have then include it in the servicing report. Believe me, I used to work in Honda.