Can not start ubuntu-one synchronization

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http://askubuntu.com – I have signed up for Ubuntu One (U1) file storage account a few months ago. I am checking it from two computers but can not start the synchronization process. On one of the computers I have about 2.2GB of files in "~/Ubuntu One" folder and it is always online. On the other computer I see no files in the "~/Ubuntu One" folder. Both show as "File Sync is up-to-date" in the U1 client. Disconnecting and connecting the client changes nothing. I thought a couple months would be enough to sync. Both computers have the same login name, same email, and connect to the same U1 account. Both are Ubuntu (HowTos)