Since I've grown lazy, I'll summarize everything in few sentences:
I want Linux to penetrate 10%+ of market segment.
By default, non-geek users have heard only about Ubuntu.
Ubuntu was almost as stable as Windows and had a chance of getting larger user base, I really liked 10.04.
With 11.10 I have problems, with 10.04 I didn't.
I seriously value my time nowadays, I can't sit days on fixing some things that have been broken in the name of who knows what. And if I have to fight with these problems for days, then I can bet Regular Joe has no desire/skills to do so. And this is the problem, Linux finally has to grow into a stable OS, not a "here are the parts of your new car, construct it yourself, oh, and on the side note, the steering wheel is missing, construct one yourself".
With 11.10 it has been two days, and the result is:
Unity has been replaced with Kde, so I'm able to work normaly and efficiently (I'm very gratefull for the suggestions I was given in this thread, I will reformat and reinstall the Kubuntu after I've found how to fix all issues)
Nvidia nonrecommended drivers seem to work, more or less (found a fix online - sudo nvidia-xconf, sudo nvidia-settings, no auto elevation, incompatible xconf)
X-Fi works somehow (switched to digital IEC958 so 2 out of 6 channels work in Firefox/VLC/Desktop, but not in Skype)
Flash player (after fighting for multiple hours, youtube seem to work fine in Kde, not so much in Unity, other flash embedded sites doesn't seem to work, asks for Flash 11.x which I cannot find how to install on amd64)
There are still some font issues, Kde renders them badly in terminal, Unity is created for Elephants, and switching main main font size to smaller causes visual issues.
Core 2 Duo E6300, MSI P45 NEO-F, Club 3D GTX 260, 4Gb DDR2-800Mhz, Audigy X-Fi Fatal1ty Champ1on ed., 0.5Tb+1Tb Seagate Barracuda 7200.12, 630W AXP, Samsung SyncMaster BX2450, ViewSonic VP171b