About 3 weeks ago, I went out of town for a week then came back. When I started up my PPC G5 iMac, I went to open Safari....but it disappeared. The icon was still in the dock, but when I clicked on it, a translucent "?" showed up over it. I tried a Spotlight search for it, and nothing came up. Same thing happened with Preview. I thought my Aunt who was staying over didn't know how to use the Mac and might have accidentally deleted them, so I used Pacifist to reinstall Safari and Preview from the Leopard disc. No big deal. Then today, I fire up Word, but same thing! Word disappeared! Same with Excel. No matter, reinstalled from the disc. After a couple of hours, I'm back again and this time I want to use Roxio Toast....gone. And this time, I don't have any install disc (lost it during moving). And I know my Aunt can't be responsible for Toast or Word disappearing, since she left yesterday afternoon; mom was using Word on my computer and I used Toast no more than 5 days ago. So anyone have any clue what the heck is going on with my applications literally deleting themselves?