I used a program called SatTrack. ftp://ftp.amsat.org/pub/amsat/software/Linux/sattrack-3.1.5.tar.gz Its a satellite tracking program written a few years ago for unix and optionally supports X11 graphics. I have compiled and used it fine on many unix platforms over the years (HP, IBM, Sun, RedHat4.2, RedHat5.0). However, it compiles find under RedHat5.1 (I only modified one line in the Makefile (for the location of X11 libraries) but it no longer works). It seems to do mathematical calculations grossly incorrect. Numbers that should look like 318.2, show up as -21903498723. Needless to say, SatTrack gets confused. Did the math libraries change? Is SatTrack doing something incorrectly when using floating point calculations? As an experiment, I compiled it on RedHat4.2 and copied the resulting binary over to my RedHat5.1 machine and the same errors happen... (I realize in this example, its using shared libraries) Help? :-) # Endaf -- / Endaf A. Jones <[EMAIL PROTECTED]> Calgary, Alberta, CANADA \ | Zener OnLine Inc Calgary Unix User's Group | | PGP key: http://www.zener.com/~ejones/pgpkey.asc | \ http://www.cuug.ab.ca/~jonese/pgpkey.asc / -- PLEASE read the Red Hat FAQ, Tips, Errata and the MAILING LIST ARCHIVES! http://www.redhat.com/RedHat-FAQ /RedHat-Errata /RedHat-Tips /mailing-lists To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe" as the Subject.