Removing generic kernel updates from aptitude post custom kernel install

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http://unix.stackexchange.com – I've updated my Mint 12 system to be running a kernel built from Linus' git repo. Now, whenever I run apt-get upgrade, I see that linux*-generic are still on the update list (they're being "kept back", but they're still present). How do I remove these from the list of packages for APT to track? (HowTos)