I've used the (first generation) Magic Keyboard and Magic Mouse for years and just added a (first generation Magic Trackpad) I was using on another system, so I've got three Bluetooth devices. It doesn't seem to work right. The mouse and trackpad work fine together but with all three devices connected the keyboard goes crazy, repeating characters and occasional gibberish, often triggered by moving the mouse. It appears that mouse or maybe trackpad signals are being interpreted as keyboard signals. Does anyone else use all three devices on a single system and have had this problem?