It seems like everyday that my new iBook is closed and asleep, it tries to wakup at about 12 noon and keeps cycling wakup-to-sleep again until I open it - yet when do I open it, it goes back to sleep again and stays that way until I press a key. I looked at the Energy Saver preference to make sure it wasn’t scheduled to wake up. I don’t have any alarms set in iCal. I haven’t added anything to dashboard. The only thing I may have done before this started happening is installing a 1gig RAM upgrade (though I don't remember if this started happening before or after the installation). I'm on OS 10.4.2. Any ideas?