Stack size was only a problem for the 32 bit OS and not 64 bit. If one is dealing with a terabyte or more of data, I don't see them using a 32 bit OS. I really don't see any really good reasons for using anything but 64 bit any more, if the hardware supports it. -- Brent L. Bates (UNIX Sys. Admin.) M.S. 912 Phone:(757) 865-1400, x204 NASA Langley Research Center FAX:(757) 865-8177 Hampton, Virginia 23681-0001 Email: B.L.BATES at larc.nasa.gov http://www.vigyan.com/~blbates/