I don't know what to do. I installed Leopard over 10.4.10 as an upgrade on my iMac C2D and after the system rebooted into Leopard for the first time, I can't login to the admin account. I just doesn't accept the password anymore! My second non-admin account works, but I'm completely locked out of the admin account! Even worse, I can't reset the password using the utility on the Leopard Boot Disk. The password reset utility doesn't seem to work! I really don't know what to do. I didn't backup before the install (I bought a second drive and was planning on backing up with Time Machine after Leopard was installed). I'm locked out of my own computer. Can someone help?