Hi: Well a user looking to cause trouble could achieve it nicely by unmounting some filesystems. My atitude is that if you had another user that needed mount access then you'd probably trust them with root access anyway, or at least sudo. Geoff. -- Geoff Shang <gshang at uq.net.au> ICQ number 43634701 Make sure your E-mail can be read by everyone! http://www.betips.net/etc/evilmail.html Please avoid sending me Word or PowerPoint attachments. See http://www.fsf.org/philosophy/no-word-attachments.html