IMHO the file http://nagios.sourceforge.net/docs/2_0/commandfile.html talks about "sticky bits" but it should call them SGID-bit. drwxrws--- is SGID and has the desired efect of setting the Groups Ownership on newly created files. drwxrwxrwt is the sticky-bit and allows only the owner of a file to modify it. The examples given in this FAQ are correct and like the whole nagios documentaion its brilliant - thanks by the way, to the ones who wrote it! HTH Ingo.