I just formatted my MBP and ever since, no matter what FTP client I use, I cannot connect to any FTP server. Does anyone know of some network setting that may prevent me from connecting? I know that the server is good, as I can get to it from my PC. Thanks! -Derek

If you just want to access your FTP server read-only, you can use Finder. Command + K opens the "Connect to Server" prompt. Type in the ftp://address of your FTP server.

Thankyou, but not only does that not work, but I need to be able to read and write. I'll call Apple, they should know.

have you tried cyberduck? http://cyberduck.ch/

also in your other ftp programs is it using secure ftp or invisible login? those maybe part of your troubles.