nvidia-304 - linux-headers not updated on update
Linux headers are not being installed on update.
So nvidia-304 fails on the install because the the new headers are not installed.
My current work around is after update and before restart.
apt-get install linux-headers-[new kernel]
apt-get remove nvidia-304
apt-get install nvidia-304
Re: nvidia-304 - linux-headers not updated on update
Do you have linux-headers-generic installed?
Using the development repositories, it's possible your local copy of the repos had the new linux-image-generic but linux-headers-generic had yet to be updated. One of the perks of using devel.