I am also experiencing this problem with Dell Inspiron 6000. The scroll Lock is not functional, but doesn't cause a lock up. The brightness control launches the on screen notification but then locks the keyboard and the mouse seems to work only intermittently. Toggling to the terminal and back seems to restore functionality.
I am also experiencing this problem with Dell Inspiron 6000. The scroll Lock is not functional, but doesn't cause a lock up. The brightness control launches the on screen notification but then locks the keyboard and the mouse seems to work only intermittently. Toggling to the terminal and back seems to restore functionality.