First the question: When Automatic calc is on, why does Mathcad compute the worksheet when a save was requested? Since the calculated results aren't saved, this doesn't make sense to me. I have some long calc worksheets that I sometime forget to turn off Auto calc before I save and then have to wait for the calc - save.
Second, for an Enhancement: Give the option to save the computed results. It would be nice to start up with a computed result, particularly for presentations where you don't want a pdf or other document.