With the new driver I sometimes see messages being printed to stderr, obviously the ODBC driver should not do this.
I believe the PQnoticeProcessor needs to be set, see this documentation for details of how this works.
http://www.postgresql.org/docs/7.4/interactive/libpq-notice-processing.html
It should be trivial to add this but I'm not sure what the best place to do it would be, would one of the maintainers
beable to do it?