Following advice in my last thread about start-ups on here I have decided to just put my mac to sleep at night instead. While this has made the experience much more pleasurable, it's seemed to have a (very) negative performance impact on my wireless keyboard which seems to now be losing 3% power (or more in worst cases) each day. My immediate guess as to why is that the iMac is keeping the bluetooth connection open to listen for "wake up" keystrokes, hence keeping the keyboard powered up, so after a long winding story, my question is: 1. Is my theory correct? 2. If yes, how can I stop this before I come home one night and have no keyboard?