the leak

it took me a while to realise, but my boiler is leaking. not good. not a lot, but still enough to fill a cereal bowl in an hour. and apart from limescale, no seeming cause, although i realise that 'apart from limescale' is not a good way of putting it, cos it is most certainly the reason. the question now is just whether it can wait till a call to the plumber tomorrow morning or not. well, i've poured some vinegar on the parts currently covered in limescale, let's see what happens...