I have a macbook pro 17" I upgraded to leopard a few weeks ago. Like it does normally, it asks if i would like to do a software update. It gave me five things which needed the update. I run the updates. It restarts and runs updates 1-5 restarted itself it seemed kinda glitchy cause it didnt come on right away. Once it was to the loggin screen; i log in (right password) and then after loading my desktop it logs me out. After repeatedly trying to log in and stay logged in, it logs me out continuously. I've reset the PRAM and the SMC but still it logs me out as soon as it loads the desktop. PLease help. I'm a musician and I need my comp all my work is on there. Thanks.