Can these kernels be removed?

[Colin Law]

On 27 March 2012 01:00, John Law <sgjohnlaw at gmail.com> wrote:
> Hi
>
> Being a purist, I would like to keep my system size small. I noticed I
> have these packages installed. While I know an OS must have a kernel,
> I am guessing some of these packages might not be needed. Anyone can
> share?
>
> linux-firmware
> linux-gerneric-pae
> linux-headers-3.2.0-20
> linux-headers-3.2.0-20-generic-pae
> linux-headers-generic-pae
> linux-image-3.2.0-20-generic-pae
> linux-image-generic-pae

This looks like a pretty good guide to removing old kernels.
http://www.liberiangeek.net/2011/11/remove-old-kernels-in-ubuntu-11-10-oneiric-ocelot/

[OT My dad's name was John Law by the way]

Colin