Oldest light turns off when I add a new light

[Andre Baros]

Each time I add a new light the oldest light in the scene turns off... or if I copy or mirror a light the new one works but the old one doesn't. Is there some sort of limit I should know about (there's only about 20 lights in the scene). This could almost be funny, since the room is symmetrical basically you can only have half the room lit right now as each time to mirror the light layout form one side to the other the first half turn off.

Any ideas?

Thanks