I've upgraded from Ubuntu 9.4 (?) to 10.4 and polymake stopped working. So I downloaded and rebuilt from source. I'm now getting (for both 2.8 and 2.9): $ cat temp.polymake.pl new Polytope<Rational>; $ polymake --version polymake version 2.9.8, released on March 03, 2010 Copyright (c) 1997-2010 Ewge...