From CUPS 1.4.1 on, all functionality of CUPS DDK has moved into CUPS. So all files of the former cupsddk and cupsddk-drivers packages are on your system. PolicyKit changed to a new major release between Jaunty and Karmic. So it is possible that packaging changed and so the appropriate functionality is in different packages.
From CUPS 1.4.1 on, all functionality of CUPS DDK has moved into CUPS. So all files of the former cupsddk and cupsddk-drivers packages are on your system. PolicyKit changed to a new major release between Jaunty and Karmic. So it is possible that packaging changed and so the appropriate functionality is in different packages.