Kernel notice - 6 kernels installed, recommended to remove 4.

[Vera]

Hi, on my notifications it said "Kernel notice: you have 6 kernels installed. You may like to remove 4 using Lite Tweaks." (or something to that effect). I tried to find something about this in forums, but haven't had any luck. My questions are:
1). How did these 6 kernels get installed? I don't remember doing anything to specifically install extra kernels. I installed LL 3.4 then upgraded to 3.6. Does it install extra kernels as part of this process?
2). As per the recommended action, I looked in Lite Tweaks about this. It lists Kernel Remover as a task categorized as "Caution".  This makes me a little nervous. Is it indeed safe for me to go ahead and run the kernel remover?

Any info would be much appreciated. Thanks!

[Moltke]

Hi [member=6960]Vera[/member]
Try this link from Ubuntu handbook and see if you find anything that might be of some help. It goes on topics like:

Remove Automatically Installed Kernels
Remove Manually Installed Kernels
Remove Old Kernels via DPKG

Hope this helps!

[Valtam]

1.) New Kernels get installed via Install Updates. They contain newer drivers, bug fixes, security patches etc. So they are essential.
2.) The Caution warning in Lite Tweaks is simply a Category heading. It highlights the fact that you are about to make changes to your system, but there's no need to worry as the software takes care of everything. If it wasn't safe, we would not include it. Go ahead and remove those older kernels when notified.

[Vera]

Thanks [member=7109]Moltke[/member] and [member=2]Jerry[/member] . I am glad that what I was seeing is normal (extra kernels present due to previous updates). I went ahead and removed the old ones using Lite Tweaks and it went smoothly thanks! Marked as solved.

[Valtam]

Excellent