We have always had a pump for our water pressure (live in a flat) and a washing machine hooked up to he same socket. Never been a problem in ten years, but in the last week it has intermittently been cutting off and on. If I switch the socket off and on a few times I get it working again, or if left for ages, it cuts back in itself. The fuse box is fine, never trips during all this. Added to that, in the bedroom, the light which is controlled by a dimmer (always has been, again without problem), has been switching off and on, on it's own accord. Any ideas what it up, or do I need to call the Ghostbusters instead?! Thank you.