unable to "SITE CHMOD" via ftp (all users)

[Dinesh Pandian]

Good day to all.
I use proftpd 1.3.1rc3 from the ports and I'm unable to chmod
any files in the home directory when logged in as any user.

The following is my proftpd.conf file, though I believe
it's the proftpd's fault. Same error is found in pure-ftpd,
even when chmod is allowed in both ftpd's conf files.

<Limit SITE_CHMOD>
AllowAll
</Limit>

<Global>
AllowForeignAddress on
AllowRetrieveRestart on
AllowStoreRestart on
IdentLookups off
DefaultRoot ~
</Global>

I believe it's some permission problems with
the users in freebsd itself and has nothing to do
with the ftp server programs. The following is output
from uname -a:

FreeBSD solara.com.my 6.2-RELEASE-p5 FreeBSD 6.2-RELEASE-p5 #3: Tue Jul 24
16:20:42 MYT 2007
root at solara.com.my:/usr/obj/usr/src/sys/SOLARA  i386

I've been trying to find a solution for quite some time,
and write to this group as a last resort. Please help.
TIA.

-- 
Regards,
Dinesh Pandian,