A few months ago, I bought a few motion detector switches for the purpose of replacing standard toggle switches in select locations in my home. I don't remember exact details, but the switches cost roughly $20 each from my nearby general home improvement store.

I have noticed that the motion detectors work just fine with normal incandescent bulbs. I have also seen them work with compact flourescents -- but not always. When motion detector switch is set to the "Auto" position, the CFLs (or flourescents in general) have a tendency to flicker. Why is that? Is there anything I can do about it, aside from going back to the standard toggle switches?

BTW, the CFLs usually work fine with the motion detector switch in the "On" position.