I have a looping Keynote presentation playing on a (PowerPC MacMini that is scheduled to turn on in the morning and off in the evening (via Energy Saver in System Preferences). Prior to upgrading to Keynote '08, this process worked flawlessly. However, since I switched to the new version, the computer hangs when trying to shutdown, giving the error message "Keynote canceled Shutdown". On the suggestion from the Apple Discussion Boards, I created an AppleScript application from Script Editor, then call it from iCal when you want the computer to go to sleep: ============ tell application "Keynote" stop slideshow quit end tell tell application "Finder" to sleep ============= But Keynote is still preventing shutdown. Evidently this isn't a unique problem, since a couple of other people have chimed in indicating they've seen the same thing with Keynote '08. I was also wondering if this might be an issue with the fact that the MacMini is a PowerPC model, ? maybe a RAM issue... Any ideas? Thanks!