Having built 5.6.0 on my Linux box (2.2.13 kernel) with SUID emulation, I now get Can't check filesystem of script ./TSUID.pl for nosuid I didn't have this problem with 5.005_61 (my most recent older perl on that machine). Do I have to disable nosuid checking on Linux? Thanks for a hint, Helmut Jarausch Lehrstuhl fuer Numerische Mathematik Institute of Technology, RWTH Aachen D 52056 Aachen, GermanyThread Next