Hi, Are you aware of that a Dos attack using gnu ls exists ? Details can be found at http://rootshell.com/archive-j457nxiqi3gq59dv/200006/ow.c.html I tested this exploit at home on a linux2.2.16 system without limits -> bug crash. Note that user limits are not set by some programs like ssh. A patch could be necessary. Regards, Laurent MONIN System & network Admin. Metaconcept Sarl www.metaconcept.com