...to the three night security guards at the Paris Museum of Moden Art who failed to detect a hooded intruder who broke in while the museum's security system was out of order despite a recent €19 million safety and security upgrade. The discriminating thief took irreplaceable paintings by Picasso, Matisse, Braque, Leger and Modigliani but experts say that however they are disposed of it is likely to be for only a small part of their true market value.