Thankyou to all that responded. Your hints let met get closer to a solution.
http://puma.join.ad.jp/tech/faq-e/sun/solaris2/Q5.51.html
...contains a related reference and mentions a patch to 2.5, 103226 (SPARC). Apparently solaris 2.5.1 doesn't have this bug (and I verified that on one of my 2.5.1 boxes).
Thanks again,
----------------------- Jim.Fondren@PoBox.Com --------------------------- Jim Fondren Unix Systems and GIS Programming jim@cartotech.com CARTOTECH 210-657-1500 11900 Crownpoint Suite 100 San Antonio, TX 78233 USA