The lamp in the stairwell at my apartment had been flickering on and off since I moved in in August. The electrician apparently fixed (replace) it today. It's now as bright as the sun outside my door. Fortunately, I have no windows that look out onto the area, so I don't mind too much. But, it's funny to look outside and see a swath of the courtyard glowing in the radiance of a sodium vapor light.