One shouldn't put anything related to KDE and the word "stable" in the same sentence.
I just wanted to say that KDE and Kubuntu work in a stable way in two computers that I manage, virtual machines, computers of some of my friends and two computers that manages an acquaintance of mine. Those are the places where I have directly seen KDE and Kubuntu working.
I usually also employed a copy of it as a virtual machine and it works stably.
Using a virtual machine, we avoid the problems of drivers that need development, driver developments that need funding, companies that hide details of their hardware and so it hinders driver developments, etc.
About it, there is a README.txt on the same web address.
If you have any doubt, on this thread you can make questions. Greetings!
Kubuntu has to few Developers to do a lot i say it's just best for them to use Ubuntu's Base for now and wait and see if Debian picks it up a little bit or even use openSUSE
That's basically the Kubuntu problem, yeah. For the most part, they're not developers - they're packagers, and their talents are in creating a KDE-oriented version of Ubuntu. What they *can't* do is take on the burden of porting KDE to Mir themselves. That's a big job, and one that requires solid development skills, and one only made harder by the disinterest upstream-KDE have towards Mir.