[CentOS] VSFTPD problem ?

I have 1 Centos server V4.x already running VSFTPD and when the user logs in
they get chrooted to the home directory, I have installed the same config
files to a second server (again Centos V4.x) and have setup the same user on
the second server but the user does not get chrooted to the home directory
but is placed in /var/ftp/pub and cannot upload file.
The files I copied are:-
/etc/vsftpd.user_list
/etc/vsftpd
/etc/vsftpd/vsftpd.conf
/etc/vsftpd.ftpusers
/etc/vsftpd.chroot_list

Any clues ?

Thanks

Denis