[plt-scheme] Unpredictable behaviour of plt Scheme 4.1.5

On Apr  3, Marcin Karpinski wrote:
> 
> I know this is a pretty high-level explanation, but I can't for now
> isolate the problem to few lines of code. Any clues?

Perhaps you're using some kind of hash iteration, and side effects in
the wrong order lead to bad results?

-- 
          ((lambda (x) (x x)) (lambda (x) (x x)))          Eli Barzilay:
                  http://www.barzilay.org/                 Maze is Life!