I have an odd issue I encounter fairly often.
Sometimes when a client gives me FTP details to their hosting, I can connect fine with notepad++, but not with filezilla. Filezilla accepts the username and password, but gets stuck at 'retrieving directory listing...', then after 20 seconds times out.
Yet the same details connect instantly with n++.
Does anyone know if there's a setting somewhere on Filezilla that could cause this?