Obviously, you might have to download it from another machine and copy over the installer after starting your balky machine in Safe Mode (hold down the shift key until the login screen appears). --Steve Try downloading and installing the marvelous utility called "applejack." (You can find it on Versiontracker.com). Read the instructions about how to boot into single user mode (CMD-S) and then type a command like "applejack AUTO restart". --Steve _______________________________________________