I have been having a major problem with Keynote since I installed Leopard. Often when I am working in Keynote or presenting in Keynote the computer reboots. For example, yesterday I was doing a presentation for a client, and the screen went black randomly in the middle of it. Then the computer restarted. There isn't a consistent cause, like a certain transition or hitting a certain key. It might do it when I'm editing a font or when I hit play or when it's just sitting there (like during that presentation). Has anyone else had this problem or have any ideas for a solution?