I’ve gone back to 14.04 LTS. Not because there is anything wrong with 15.04 or 15.10 for 99% of users. But, because I have an unusual combination of things installed on my system which, for the moment, work best in 14.04 LTS. I’ll just sit it out till the next LTS.
I think a bit of it is to do with me getting older, in turn leading to a higher risk averseness and less time to fiddle about under the hood. That is to say, I suspect most of the little niggles I have experienced getting some of my set-up to play nice with 15.04 and 15.10 would be solvable if I was prepared to put in the time and effort to solve them (in particular, QT applications like Qjackctl or Rosegarden). But I am not. I had already moved up to 15.04 and experienced a few problems with my set-up that I managed to solve. But, it did require some compromises on some of the applications I use. This current hiccup I have had with the buggered upgrade to 15.10 has simply given me the excuse to go back to 14.04 LTS.
Got it all re-installed last night and all is well…