I have Netgear N600 wireless router and I am very happy with the product in all-purpose. This model has the dome of blue light that show the movement of the antenna turned off by clicking on the dome light. A few days ago I noticed that the lights were turned on, the flash of a second or two then off again. This is repeated every few minutes or less. I have checked the dome light goes out so I feel it is trying to get my attention, but I cannot find anything in the router log file or any other signs of problems.