@andrea: what do you mean with gnome-screensaver ? I'm using unity as far as I know I can't change the screensaver.
Also I found out that if I go to a terminal (ALT+F1) and kill -9 compiz then when I go back to the X11/Unity I can log correctly.
Seems related to compiz getting out of control (as plain kill didn't work).
@Gerardo: just use the terminal to kill compiz, then go back to the GUI and you should be able to log.
@andrea: what do you mean with gnome-screensaver ? I'm using unity as far as I know I can't change the screensaver.
Also I found out that if I go to a terminal (ALT+F1) and kill -9 compiz then when I go back to the X11/Unity I can log correctly.
Seems related to compiz getting out of control (as plain kill didn't work).
@Gerardo: just use the terminal to kill compiz, then go back to the GUI and you should be able to log.