Q:
A: That is NORMAL, especially if microwave's 3rd wire is not grounded, wireless router and microwave oven are in the same room, pretty close to each other or in between router and the wireless PC or laptop. Microwave ovens and 2.4 gHz cordless phones operate in the same frequency band as wireless computing. Expect interference with each other. You may have to move router away from the microwave oven.