Arrived at work this morning to find a very curious splatter pattern of grey almost toner like marks all across various paperwork on my desk.

Bit mystified at first. Looked like some accident and I did wonder if anyone had been messing with a printer toner cartridge or something. The trouble is that the only people who could have been in the office since I was last there were the cleaners, so it seemed unlikely.

Tracking the splats' extent and working out a 'ground zero' finally gave the clue that solved the riddle. A book with a black, 'cloth' cover had an interesting stain on it. And it eventually became obvious that a leak had come through the ceiling again, dripped onto the book long enough to make it wet enough that a small black puddle formed and then 'splatted' around in a way that then had time to dry out before I arrived.

Sigh, I've complained about the leak before but it appears there's nothing they can do as they fix one bit and it just moves elsewhere!