Recompiled the whole world with sources from Tues Mar 5, gcc 2.7.2
This with an i386, pcvt.

Screen 1 has the problem that anything using more(less) will only appear 
using the bottom line of the screen.  Additionally, its notion of the bottom
of the screen is one line higher than normal.  The screen will then only
draw on this last line until clear(1)ed.

stty -a reports nothing different about this screen than the others.
The problem occurs if more(less) is compiled with 2.7.2 or 2.4.5

Ideas?