On openSUSE 10.3 and 11.0…
After installing KDE4 Desktop from the correct repositories, you attempt to login and encounter a A dialog-box message:
Could not start kstartupconfig4. Check your installation
Next, login to KDE3 desktop, and run:
You may see:
kstartupconfig4: symbol lookup error: /usr/lib/libQtDBus.so.4: undefined symbol: _ZN14QObjectPrivate15checkWindowRoleEv
If the above is your situation then try to un-install the Nessus client.
This worked for me in openSUSE 11.0 and was suggested in this
this blog post for openSUSE 10.3.
Hope that helps?