Hi, On both redhat 7.3 and EL3 machines my entries of: nobody hard cpu 1 do not seem to have effect. I am trying to limit bad apache and apache-spawned processes (all ran as user nobody). My only guess is that perhaps since apache starts out as root it is getting roots limits? I doubt this but it is all I can think of. These are very stock installs of 7.3 and EL3 - is there anything I need to enable to make PAM limits effective? Do I need to reboot tthe machine? After I make the changes I do stop and restart apache. Also, until I can solve this, is anyone aware of a good script to kill off processes uses too much CPU time? Or a perl module that I can use to write something to grab CPU times and do the killing in my own script? Thanks! P.S. I searched the archives but could not find anything. One recent message said to search the archives for a solution (another user posted a similiar question to mine) but I could not find anything. Thanks again.