windows manager not starting

Hi all,

recently installed the latest Suse at home and found an issue …

gdm starts up and displays Gnome the way it should be. But the windows manager seems to be missing. All windows appear at the top left of the screen and they have no title bar.
After executing the command “metacity” in a shell everything works properly.

HELP!!

Where do I have to put the metacity call to get executed at startup?

Thank you!

Michael