I haven't kept exact statistics but, on average, I'd say about 20 to 50 false positives, every time Ubuntu produces a new release. All have been reassigned to the actual package whose upgrade failed or, in the case of a more general complaint about the upgrade process, to update-manager.
I haven't kept exact statistics but, on average, I'd say about 20 to 50 false positives, every time Ubuntu produces a new release. All have been reassigned to the actual package whose upgrade failed or, in the case of a more general complaint about the upgrade process, to update-manager.