Hi, According to this [1], it seems that Ogre has deprecated his Input methods, and instead are using OIS, but CEGUI has not removed the related code in the released version (but appears to be done in the svn code).
So, this is an upstream bug, which I hope sooner or later will be solved. About this Debian bug, you can make what you believe is more appropiate: close it, downgrade the severity, or just wait for a new release version of CEGUI. Regards, -- Ing. Erick Vresnev Castellanos Hernández "Libertad es aún la idea más radical de todas." ---Nathaniel Branden [1] http://www.cegui.org.uk/phpBB2/viewtopic.php?p=12877
