This is what I have done. I Added kubuntu backport PPA for Ubuntu 10.10. After I installed the kde-standard package.
I then tried to login using KDE plasma workspace from xsession.
The problem is that when KDE starts and I can only see my old Gnome desktop. But I am sure KDE is running Gnome, ALT+F2 gives me the KDE's desktop search but the rest of the apps are defaulted to Gnome.
Then I tried installing the whole kubuntu-desktop package. But the same problem continues.
How can I resolve this issue, any ideas?