I can confirm that I see this bug as well in Intrepid on a Dell Latitude D600. It affects other power related function keys (the D600 has a fn key with a battery that prompts the power applet to display battery statistics) but does not affect others like volume, screenshot, etc. so I suspect this may be more related to gnome-power-manager. Also, this problem does not occur when adjusting the brightness via the applet's slider.
I can confirm that I see this bug as well in Intrepid on a Dell Latitude D600. It affects other power related function keys (the D600 has a fn key with a battery that prompts the power applet to display battery statistics) but does not affect others like volume, screenshot, etc. so I suspect this may be more related to gnome-power- manager. Also, this problem does not occur when adjusting the brightness via the applet's slider.