A previous hint here on Macosxhints detailed the installation of ProFTPD from source on Mac OS X 10.0.x and 10.1.x.
Things are a little different with Jaguar (10.2) as ftpd is now controlled by 'xinetd' rather than 'inetd', whereas the previous hint (and the ReadMe file included with ProFTPD 1.2.4 for Mac OS X) suggested replacing a line in /etc/inetd.conf, the file now to be changed is /etc/xinetd.d/ftp.
Look for the line that reads:
server = /usr/libexec/ftpdand change this to:
server = /usr/local/sbin/proftpdAlso change the line:
server_args = -lto:
server_args =In other words, just remove the '-l'.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20020824214006348