Something has either come loose in the back of the machine or got in from the washing (my kids hoard "treasure" in their pockets) - the noise is at the back of the drum. The machine has done one wash since and that was fine (if noisy). My main question is - is it dangerous and will it harm the machine if I just leave it - then is this something I can have a go at tackling or who should I phone - plumber or electrician (or my handy mate)? Thanks for any advice - I've got a lot of washing to do!