have you tried using the functorial version with a suitable compare function (ie not Pervasives.compare) ?
I don't know about the type of the keys, so it is just a guess...
----- Message d'origine ----
De : "jhsu1@email.sjsu.edu" <jhsu1@email.sjsu.edu>
À : caml-list@yquem.inria.fr
Envoyé le : Lundi, 11 Décembre 2006, 19h18mn 15s
Objet : [Caml-list] Hashtbl.find_all Stack overflow