I've had the deco mesh system set up for over a year and it's been working seamlessly. However over the last few days the system is dropping out. I'm loosing communication with the one at the top of the stairs regularly. I've tried removing the satellite m5's and adding them again, even swapping them around with no luck. It's as though there's interference blocking signals all of a sudden but there's been no new electrical devices. The only thing I can say is different is that the weather has been terrible over the last week or so but I can't see how that effects the mesh system? BTW if I connect to the broadband router directly it works perfectly so this issue is not ISP related.