The remote host is missing an update to kobo announced via advisory FEDORA-2009-8789.

Apply the appropriate updates. This update can be installed with the yum update program. Use su -c 'yum update kobo' at the command line. For more information, refer to Managing Software with yum, available at http://docs.fedoraproject.org/yum/. https://secure1.securityspace.com/smysecure/catid.html?in=FEDORA-2009-8789