My husband and I have been slowly converting our incandescent light bulbs to LEED-standard CFLs, but we are concerned about the effect they might have on some of our guests. Some of our friends suffer from fluorescent-induced migraine headaches and have complained about the flickering of our front porch lights (which is, to me at least, unnoticeable.)

At the moment we're just replacing the lights that guests are unlikely to have to see (closets, private rooms, etc.) but eventually we'd like to spread them all through our house. We'd just like to do it without, you know, physically harming our guests.

Does anyone know of a way to combat this problem?