Thanks Scott, I will look into these testing programs and file a bug if I have in fact found a special occurrence. I suspect that there might be some issues with our postgres install, as the initial install was via a yum, and I recall that our sysadmin had some difficulty removing it in order to do a compile from source install. We have also experienced one or two cases of strange hard drive behavior, so this gives us some avenues to explore. r.b. Robert W. Burgholzer Surface Water Modeler Office of Water Supply and Planning Virginia Department of Environmental Quality rwburgholzer@xxxxxxxxxxxxxxxx 804-698-4405 Open Source Modeling Tools: http://sourceforge.net/projects/npsource/ -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin