"Permission denied (Upload)" and root-dir in /etc/passwd

Hi all,

short : i can't upload althought upload is specified in ftpaccess when I 
use /etc/passwd to specify the root-dir and the automatic cwd

I would like to set up the following configuration :
being able to log ftp users in different specific root-dir in using 
/etc/passwd
and I would also being able to automatically log them in a special dir 
(here /pub)
like that :
    ftp1:!:102:102::/var/wu-ftp/ftp1/./pub:/bin/false
    ftp2:!:102:102::/var/wu-ftp/ftp2/./pub:/bin/false

now if I try to manage the upload permission, I have problems :
I always get :
    ftp> pwd
    257 "/pub/incoming" is current directory.
    ftp> put gggggg.jpg sss.jpqqg
    local: gggggg.jpg remote: gggggg.jpg
    200 PORT command successful.
    553 gggggg.jpg: Permission denied on server. (Upload)
when uploading a file althought I - think I - modified the ftpaccess 
file correctly
ftpaccess was :
    upload  /var/wu-ftp/ftp /pub/incoming    yes     ftp     daemon  
0666    nodirs
this other tries didn't succeed either :
    upload  /var/wu-ftp/ftp/./pub   /incoming   yes     ftp     daemon  
0666    nodirs
    upload  relative /var/wu-ftp/ftp/./pub  /pub/incoming   yes     
ftp     daemon  0666    nodirs
the only one working is :
    upload * /pub/incoming ...
which allow upload in /pub/incoming whatever the root-dir is...

if I modify /etc/passwd and use */var/wu-ftp/ftp1* instead of 
*/var/wu-ftp/ftp1/./pub* for the root-dir, upload filter is woring ok : 
I can upload in /var/wu-ftp/ftp...

I would like to control it and also being able to specify the root-dir 
in /etc/passwd, anyone now what am I missed ?

version : Version wu-2.6.2(1) Wed Mar 3 22:51:51 UTC 2004

I thank you much in advance

also :
is there a way to avoid the message at the end of the ftp connection to 
be displayed (or change it) ? :
    221-You have transferred 0 bytes in 0 files.
    221-Total traffic for this session was 1116 bytes in 1 transfers.
    221-Thank you for using the FTP service on jpl.
    221 Goodbye.