So over the past couple of days I've been running into this problem: every now and then, my iMac Core Duo says that the connection has been lost with my Aluminum wireless keyboard. It almost instantaneously reconnects as I've never had any lack of responsiveness from it, however, for a few minutes after this message is displayed, my mouse lags significantly. Eventually everything goes back to normal speed. I've tried rebooting, powering off the wireless mighty mouse and the keyboard, repaired them, etc. and the problem persists. any ideas?