I just wish they would work as a light bulb should! I had to replace a bedroom ceiling incandescent light with a compact fluoro - one of these large round bulbs. I bought another one to check the first wasn't faulty. It takes the best part of five minutes to come to full brightness and is decidedly very dim for the first couple of minutes. What use is a bedroom light bulb if you have to turn it on five minutes before you need to use it????
