[Mageia-dev] Problem with gdm metacity again

[JA Magallon]

Hi...

This old problem has surfaced again:

.xsession-errors:

...
Window manager warning: Screen 0 on display ":0" already has a window manager; try using the --replace option to replace the current window manager.
Window manager warning: Screen 0 on display ":0" already has a window manager; try using the --replace option to replace the current window manager.
...

I get only the nautilus desktop, with two black bars on top and bottom of the screen.
If I launch a terminal, 'gnome-shell --replace' works fine.

Any idea ?
Can it be some personal setting ?

TIA