XEmacs 21.4 (Patch 4) FTP Package Upgrade Error

I'd be grateful if someone could help me with XEmacs 21.4.4 coming from Mandrake Linux 8.1. I cannot manage automatically upgrading installed packages in XEmacs 21.4 (Patch 4) The sequence of Tools -> Packages -> Update Package Index systematically leads to an ftp error, no matter which download site I try: FTP Error: USER request failed, please login with USER and PASS open ftp.xemacs.org Connected to xemacs.org. 220 ProFTPD 1.2.4 Server (Xemacs FTP Archives) [207.96.122.9] quote user "anonymous" 500 AUTH not understood. open ftp.sunet.se Connected to ftp.sunet.se. 220-#################################################################### 220-### Try accessing us on the World Wide Web! http://ftp.sunet.se/ ### 220-### http://ftp.sunet.se/pub/ to browse... ### 220-### http://ftp.sunet.se:8000/ftpsearch to search for filenames ### 220-### http://ftp.sunet.se/mnogo/search.php to freetext search ### 220-#################################################################### 220--> Please login with user anonymous or ftp to access our archive <- 220 ftp.sunet.se FTP server ready. quote user "anonymous" 530 Please login with USER and PASS. I'd appreciate any pointers. Best regards, Sergei Vorobyov Information Technology/ Computing Science Department Uppsala University Box 337 S-751 05 Uppsala Sweden