I run a more recent kernel (2.6.34) than the ones supplied with the Update Manager. I am tired of updates asking me to reboot every week or so and screwing my grub.cfg (this probably deserves it's own question).
How can I disable those updates painlessly?
Thanks.
Go to System → Administration → Synaptic Package Manager.
Highlight the installed kernel and choose Package → Lock Version on the menu bar.
If for some reason you still get prompted for update you can use
sudo aptitude hold <the installed kernel package>
to the same effect.
dpkg --set-selections
serves the same purpose, too.