In the Synaptic Package Manager there is a category "Installed (local or obsolete)". For whatever reason I have a bunch of packages listed there.
As you can see from the screenshot, the packages are Open Office packages. I doubt that Open Office became obsolete, or local (whatever that means).
I am using ubuntu 10.04.
What does "local or obsolete" mean in Synaptic, and why do packages become "local or obsolete"?