Try to clean and purge everything in apt. Then disable kubuntu-ppa. Cross your finger and reload your repo.
Also have a look in this thread. Read every one of them carefully. http://ubuntu-ky.ubuntuforums.org/showthread.php?t=1055420 -- M. Nasimul Haque, M.Sc.(SUST) Wessex Institute of Technology Southampton, UK -- Ubuntu Bangladesh | http://ubuntu.linux.org.bd [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bd
