There have been some changes in MLDonkey specific to sparc between 2.5.28
and 2.7.7
but I think the bug you saw was fixed in Ocaml upstream on Jan 4th, 2006:
Objective Caml 3.09.1:
Bug fixes:
- ocamlopt: float alignment problem on SPARC PR#3944
http://caml.inria.fr/mantis/view.php?id=3944
Greetings, spiralvoice