I changed my password for Ubuntu One using the Web interface, and added a new computer. Since then, the old computer does not synchronize with Ubuntu One. It doesn't show any error messages or such, but files uploaded from the web interface or changed on the newly added computer don't appear/change on the old computer. I guess that it can't connect because it is still using the old password.

The problem is that I can't find an interface to change the password the client is using to connect to the service. The "manage account" option opens the Web interface. I looked into the keyring, and found the key for Ubuntu One, but there I only see an encrypted version of the password, so I can't change it there.

So what is the correct way to tell my client that my account password has changed?

Edit this is what I see when I open Preferences --> Ubuntu One. Is there something wrong with it? It also stubbornly insists that it has successfully synchronized. But the files I have added from other computers are not in my Ubuntu One folder.