Just what the title says. The update manager is also asking me to update to Ubuntu 12.10 even when I have the part unchecked that says "Check for new Ubuntu version updates" thing. Is there some way to turn the annoying update manager off?
That's because apt-get upgrade does not install new packages.
Due to the way the kernel packages are built, every new (bugfix) version of the package actually has a different name. Plus you install a metapackage, which will always depend on the latest kernel.
This has as a sideeffect, that updating the metapackage for the kernel always requires a new package to be installed (the new kernel), which update-manager will happily do for you.
apt-get upgrade however will strictly upgrade packages, and will not install new packages. If you run apt-get upgrade, you will see that the kernel metapackage is being held back (for this reason, though it doesn't give you the reason).
So instead of apt-get upgrade, run apt-get dist-upgrade to update the kernel metapackage and install the latest kernel version.
