Gambit 4.0 beta 20

From the Gambit web page:

The Gambit Scheme system is a complete, portable, efficient and reliable implementation of the Scheme programming language.

To reproduce my results on Ubuntu Gutsy Gibbon, install Gambit with

sudo apt-get install gambc

and run the interpreter with

gsi -:s,daq-1,h10000 2>&1

Gambit makes the following choices: