Yesterday i experienced numerous of bugs after a Linux Mint upgrade (a suggested auto update) where linux kernel fails hangs @ update initramsfs or something like.
I tried to reinstall a kernel but all the versions (3.3.4 stable; 3.4 etc...) fails to install because of the "initramfs installation hang bug".
Then i was unable to boot because of some commands i picked on the internet that removed the initrd file.
This is why i suggest to lock the kernel version by default for further versions.
"Updating a kernel" is like "installing a new driver on linux" (something "impossible to do" for most people) so this should be a manual task for advanced users (Open synaptic-->search for "linux-image"-->"unlock version")