aptitude supposed to uninstall old kernel

[Tom H]

>> Since starting to use Lucid, aptitude has been uninstalling kernels
>> automatically and leaving me with just two kernels at every kernel
>> update. I had meant to look into the logs but I forgot about it and
>> did a clean install two days ago.

> I use apt-get rather than aptitude and have -16 through -19. I did
> notice that after kernel upgrades I would be prompted to use
> 'autoremove' to remove the previous kernel (using 'sudo apt-get
> upgrade'). I of course ignored the prompt. Unfortunately, I've had so
> many changes/updates lately that I'll need to poke around to see if I
> can recreate - I've a lucid test machine that hasn't had it's kernel
> updated in awhile. I'll fire it up & use aptitude instead of apt-get to
> do the update.

So it may be that aptitude does not prompt about the auto-remove and
just does it even though it seems to contradict both 01autoremove and
05aptitude.