David, Are you still running the LDM with mmap files so _MAPRGNS was defined for Linux? I have a site with a 650megabyte queue that having a problem. The queue seems to grow even though NOGROW was set. Eventually the machine runs out of disk space. I'm trying to determine if the problem is the site's configuration or it's the _MAPRGNS flag being set? What's your experiences? thanks, Robb.... =============================================================================== Robb Kambic Unidata Program Center Software Engineer III Univ. Corp for Atmospheric Research address@hidden WWW: http://www.unidata.ucar.edu/ ===============================================================================