opensuse 11.1 - Kde4 not saving 'root' changes

Hi All,

I have just installed the last version of Opensuse 11.1, and I found it very faster than before version.
But I found a little problem: using administration tools in Kde4 (for example, kdm manager), after inserting the root password, every change I save, it is not saved at all.

Is it a know problem? Is there a solution?

Thanks a lot