"Bert Coules" wrote in message
o.uk...
An update: the lights were on for several hours last night, and were tried
again this morning. Neither the new bulb (in a non-suspect fitting) nor
an old and well-used bulb (in the possibly faulty fitting) have blown.


Perhaps I was just unlucky in the three bulbs which only lasted very
briefly.

That is IMHO the most probable answer.



--
Adam