Wait. This isn't normal?! I have the exact same thing happen here. Whenever the bathroom heat lamp (well, lamps - 2 x 275W, 240V) turns on, I clearly see the

Wait. This isn't normal?! I have the exact same thing happen here. Whenever the bathroom heat lamp (well, lamps - 2 x 275W, 240V) turns on, I clearly see the lights in whatever room I'm in dip for maybe 10ms. This used to happen with the old incandescent lamps from years back, but still happens with the newer CCFL types too. Has never not happened. Huh. Something to keep in mind, particularly for whenever I'm in an environment with access to competent management/engineering ;) (I just know if I tried bringing it up with the current landlord I'm almost certain I'd be authoritatively told "that's normal"...)