Catinhat mentioned they can't get "energy effient" bulbs to work in cold areas. Porch, places like that.
I've got the same issue. For instance, I have several different floresent fixtures in the garage. A couple old 4' bulb fixtures and a couple long U shaped bulb fixtures. Some start right away and others flicker a while before they come on. I have seen some newer, cheap 4' fixtures that won't light at all in cold temps. I know it has a lot to do with the ballast in the fixture, as to how it works with temp extremes.
Have used screw in floresent bulbs in some places. They light right away, but don't give out much light. I'm spoiled enough that I like areas to be "sunshine" bright………
Need some guidance from an electrical / lighting expert……………..
I see the need for a "how to / what to" use article from someone who knows…………..
On the cheap, of course……….
(hint, hint — nudge, nudge) 
Thanks
Wyo