Please solve or tell NVidia solve or whatever! I have a PC with a Nvidia GeForce 8800 GTX graphics card and dual monitors! I was somehow possible to use it without shared desktops on version 9.10. However, the new release 10.4 gives me two “independent” desktops which means that I can drag a window from one desktop to the other one (between two the monitors I mean). I read a few forums and discussions related with this and similar situations. At the end got no solution. So I decided to delete the Ubuntu totally, I got rid of it. Replaced it with Win7 and I am much happier now.
I don’t care about the graphical fancy stuff but with usability of the OS. So if you don’t want to lose your users, you better solve this, and if one does please post a comment here.