Cleaning your grub
I meant your Grub boot-Loader. 
A few days ago, I directed you to a tip on "how to prioritize your boot sequence." This is useful specially if you have multiple kernels. However, once you find that optimized kernel for your system, it is a good idea to trim down the list of available kernels so you can add more in the future.
Just a warning, though, it is common-sense NOT to delete the current kernel or you will bork your system.