I flipped open my macbook (running 10.6.1) yesterday, went to sign in as a guest and i got the spinning pinwheel. It eventually went back to the login screen for both my username and the guest account. When I entered my username's password it took me to a "guest" looking account and all of my data was gone. The user->desktop folder showed 0Kb, iTunes, Safari, iPhoto are completely empty -- yet when i navigate to the folders under 'macintosh', I see all of the files (minus my entire desktop). Has this happened to anyone? Any suggestions? I tried giving her the old "APPLE + OPT + P + R" and took out the battery for a bit but to no avail. Completely puzzled & on vacation. Gnarly feeling.