I say its (k)ubuntu - granted its easy to use/install but after all it is just a modded Debian with some packages highly incompatible to most debian/debian based distributions.
I use plain debian now for years, mostly compile the latest nvidia beta driver modules from source and never had any problems at all, neither 32B nor 64B
No offense meant, but the main problem on Linux when something isn“t working is the user.
Blaming Blender, Nvidia or Ubuntu is surely unfair⦠they develop x-platform because they want to support the community, not because they have to.
Firstly you should be thankful nvida pops out very good linux drivers very frequently, if we had to rely on ATI⦠well better don“t think about that and without the crappy nvidia.o there would be no HW 3D at all in linux.
And those fancy pants compiz stuff and blinky stuff that comes with ubuntu⦠Well a waste of resources. I“ve seen a lot of ubuntu systems running not much faster than any teenage girl WinXP32 because Gnome was overloaded with useless crap⦠just like Windows.
As for āenvyā iĀ“ve never seen a post āthank you envy, best programm ever, runs smoothly, so easyā they are more like āpiece of crap, does not work, had to reinstallā¦ā 
Using linux is no stable system unless u use only stable repositories and no proprietary drivers or 3rd party compiled stuff. Its like homeimprovement for your computer and reading up in forums and documentations until the point you understand whats going on in your machine 
even with a distribution like (K)Ubuntu that āseemsā to be gentle towards usersā¦
linux“s a beast.
I am glad i could post nothing relevant to the inital question, thanks for your attentionā¦
i think i am having a strange dayā¦
better go back to workā¦