There is currently no production release of PostgreSQL that runs more than 5 concurrent sessions
in Windows because the releases available for Cygwin, 7.4.3 to 7.4.5 are built with Cygserver
which has a bug that have PostgreSQL hung with more than 5 concurrent connections.
I am planning to revert to PostgreSQL 7.1 which is the latest cygwin package built with cygipc
(instead of cygserver).
It would be nice to have the latest releases of PostgreSQL rebuilt with cygipc and available
as cygwin packages.
Thanks
Jean-Pierre Pelletier