If you have multiple kernel installed in your Ubuntu 10.04 box and you don’t want to use the old one anymore, follow this simple stpes:

  1. Never ever edit grub configuration file and its referral.
  2. Go to Synaptics Package Manager.
  3. Go search for “linux-image-2“.
  4. In the list of search result, mark for removal the old kernel (it can be more than 1 kernel).
  5. Apply, restart your Ubuntu, done!

Hope it helpful 🙂