I'm using the wireless keyboard & magic mice with my mbp 2011. Sometimes (and now) there's a lot of lag. When I press a key, it's repeated few times and the keyboard and mice is unresponsive. Any ideas what's wrong? it doesn't happen all the time
got an iphone & an ipad connected to my wifi network, apart from that there's nothing else wireless here. The mice & keyboard are about 20cm (mice) and 40cm (keyboard) away from the macbook.