On Tue, Jul 04, 2017 at 08:17:53PM +0930, Wayne Hartell wrote: > Thanks. Yeah I have tried importing keys (even though they already exist > as confirmed with 'apt-key list' and it makes no difference. All the keys > complained about are already present. > > I don't have enough experience nor understanding of Linux to know whether > it's a bug or dumb user and though I suspect the latter, I feel like there's > a chance it could be the former.
Did you try Phil Hartnell's suggestion? It sounds promising - In fact I had this exact issue on a relatives computer, and I'm going to try his suggestion later on. The sequence of events he describes sounds relevant to the situation I experienced, so worth a shot methinks. Please advise us how it goes.