Full partition

When you login to your system and /boot is full, don’t panic! Run this command and lean back, take a cup of coffee and relax, breath! When it’s done, it’s a good idéa to: Once again, lean back, take a cup of coffee, find your inner zen! Source: http://askubuntu.com/questions/2793/how-do-i-remove-old-kernel-versions-to-clean-up-the-boot-menu