Hi;

I've got a three-bulb light in my bedroom. It's one of those which is
attached to the ceiling; and takes three small 40watt bulbs (bayonet
fit). About a year ago, one of them blew, and I replaced it with a
fluorescent bulb of equivalent strength. Then a few months agoa second
bulb went - again, replaced it with a fluorescent. A couple of weeks
ago the third bulb went, and I haven't replaced it yet; but I have
noticed that for about half an hour after we switch the light out, one
of the blulbs flickers, every 5-10 seconds. Not enough that it comes
on; it just looks like a dim flash - one flash each time. A few times
I've woken up at three or four in the morning, and noticed it's
stopped.

No dimmer switches; nothing fancy. Just two light switches, either of
which will turn the light on or off. It seems perfectly normal when
it's switched on. The wiring is quite old, and there's no earth wire;
but I wasn't blowing bulbs every few weeks or anything, I've no reason
to suspect the wiring, other than I can't really imagine what else can
be causing this.

Can anyone offer advice?

Thanks;



Tim