Problem with Curses under 4.0.1

[frog!cpoint!jeff at eddie.mit.edu]

I am having a problem with curses on my Sun 3/50.  I wrote a program to
put up overlapping windows.  It puts up some information on the top
window, then deletes the top window.  I have tried touchwin and wrefresh
on the underlying window.  I have tried touching the stdscr.  The top
window does not go away.  I have run the same program on a System V
machine here and it works fine.  Is there a work around or fix to this
problem?

Thanks,
Jeff