In most cases, when you log into an FTP server anonymously you are placed in the root directory of the server. In this case browsers and most FTP-clients work in a similar fashion.
However, on many servers (especially UNIX), when you log into the FTP server with a username and password, you will be placed automatically into your home directory (e.g. /usr/home/username).
This is where Opera differs from other browsers. Opera (and FTP clients) will by default start from this home directory, while the others will explicitly move to the root directory, and start looking for the file from this location. Enabling absolute FTP paths in Opera will make Opera behave in the manner of the others instead of the default.
Using the default configuration in Opera will mean that to get the file
/usr/home/my_directory/dir/file.zip
on this server, you only need
ftp://user:password@ftp.server.com/dir/file.zip
while with Absolute FTP paths enabled in Opera you will need
ftp://user:password@ftp.server.com/usr/home/my_directory/dir/file.zip
Need help? Hit F1 anytime while using Opera to access our online help files, or go here.