The problem can be corrected by updating your system to the following package versions: Ubuntu 11.10: ubuntuone-couch 0.3.0-0ubuntu2.1 After a standard system update you need to restart your session to make all the necessary changes.
https://ubuntu.com/security/notices/USN-1381-1
https://bugs.launchpad.net/ubuntu/+source/ubuntuone-couch/+bug/882049
https://launchpad.net/ubuntu/+source/ubuntuone-couch/0.3.0-0ubuntu2.1
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