y2controlcenter-gnome:3727 WARNING :key not found

**(y2controlcenter-gnome:3727) WARNING **:key not found

every time yast invoked i get this xdg-su:/sbin/yast2 window.
and yast works like normal.
what does it mean and how to get rid of this warning.

i am not able to get the gnome started. the system freezes if i try login to gnome.
only icewm works.:frowning: