Comment 0 for bug 596409

Binary package hint: software-center

If you have installed one or more packages that do not have an associated repository, those packages will never be updated. The same is true for packages that used to have an associated repository and no longer do -- for example, the repository has disappeared off the Internet, or it still exists but no longer contains that package, or you have removed it from your sources list.

Someone interested in security and/or compatibility will likely want to remove or replace as many of these packages as they can. But Ubuntu Software Center currently offers no way to see which packages on your system are in this state. I *think* Synaptic's "Installed (local or obsolete)" Status filter is supposed to do this, but I can't tell for sure.

This has long been specified but is not yet implemented <https://wiki.ubuntu.com/SoftwareCenter#channels>: "Finally, in “Installed Software”, the section for packages with an unknown source should have a question mark as its icon, and the label “Other”."

[Originally reported by Neil Patel in <http://twitter.com/njpatel/status/16551486084>.]