I unpacked the xfig-3.2.2 package and noticed that the
interpolated splines don't work properly in my system
(5000/240-1.4.1): once you finish entering the points with the
middle button, the drawn pattern is all messed up. So I
downloaded a slightly newer source (xfig-3.2.3a) and compiled
it. The problem is not there. I'm not sure whether is a
compilation problem or a bug in xfig-3.2.2.

Dan