For those Mac users who have switched to, or are trying out, Ubuntu Linux, here’s how to connect to your iDisk:
Step One: Go to Places -> Connect to Server (from the top panelbar)
Step Two: Set the Service Type to “WebDav”.
Step Three: Enter “idisk.mac.com” as the Server.
Step Four: Enter your .Mac username in both the “Folder” and “Username” boxes.
Step Five: Hit “Connect”. A folder should appear on your desktop called “idisk.mac.com”. Double-click the folder, and enter your .Mac account password when prompted.
That’s it! You can access your entire iDisk from that folder on your desktop. When you’re done, just right-click on the folder and choose “Unmount Volume” to Disconnect.