We have 2 circular florescent ceiling light fixtures on a single switch. Last night neither bulb would come on. But this morning they are working fine.
I had checked the circuit breaker, that was OK (other lights attached to that circuit breaker were working).
We have noticed that we are not getting very long out of the bulbs recently, having to change them withing 12 months of replacement.
Each fixture has one bulb.
Note I am in Ireland: 230vac & 50hz
Also, I don't know if this has anything to do with it, but it seems that 'quality' of electricity in our area is poor. Occasionally a circuit-breaker in the house will trip, and exactly simultaneously one of the neighbors' intruder alarms will fire (as they do when power is interrupted) or the power in the neigbourhood will vanish for a second, resetting clocks and computers.