Saw this last Friday on an untreated District Line train. Seems like a pretty normal notice.
Apart from the fact that the sign was above a door! How silly of LU.
Today I had the chance to ride in one of the District Line's D-stock refurbished train (car no 7002). The interior has been brushed up with new seats (including tip-up seats similar to those on the Northern Line) and the inside repainted. The livery now sports the red/blue London Underground colours. About bloody time.
A new dot matrix information display is also visible. The grab poles were painted green (to match the line colour on the Tube map).
The refurbishment is being done by Metronet and these trains will continue to be in service till 2013 when new fleets are brought in. Initially the cleaned up trains were running on the District Line services to Olympia but it seems that some has now sneaked onto the Acton Town route.
No pictures but there are some here at Going Underground. (More here)
Also on the bus today I passed through Stockwell Tube station. It is heartwarming that people are still leaving flowers and notes at the station where Jean Charles de Menezes was killed.