no actually no, it's not a kernel panic. its worst cause kernel panics just need a reboot T_T The thing is my MacBook Pro with Leopard wont show the login window/screen etc.. it gets "stuck" at the grey screen with the apple logo and the little processing icon moving, then it restarts itself just to go back to the grey screen with apple logo, and so the cicle repeats. I already opened my lap as an external HD to check if the HD was Ok and the all files are intact, so I guess Ii may have accidentaly moved some hidden files. anyone knows how can i fix this? a list of the hidden files may help too.