Paul,

Getting dangerous now

If you change root for ftp (chroot) to "/" and publish your open ftp url...

I am sure someone will
erase everything on your server as an "educational measure" or so ... within hours
Install a chroot contrib ... like the one from dungog
http://www.dungog.net/sme/files/dungog-proftpd-chroot-0.1-5.noarch.rpmUse the panel to "chroot" the users to the directories they should start (&stay) in.
They will be allowed to go lower into the specified tree but NOT HIGHER (climb directory tree)
(Example: They may go from
/home/mine/ to
/home/mine/incoming/ but not to
/home/.
...like I said chroot them to the safe (?!) directories on your new big hd ...
/bigdisk/homes/paul and
/bigdisk/homes/mary ... or for trusted users
/bigdisk/homes ...
/bigdisk/incomingNOBODY should have access to the system parts of your SME via ftp !!!
CHECK this locally (iow before you open ftp up to the world in your admin panel !!!).
You may want to read
man chroot or
info chroot or the proftp manual page url I gave you.
If nobody has told you yet in experienced here it is...
Running a ftp server open to the world is among the most unsafe things you can do on SME !!!
Regards
Reinhold