Unexpected Access to Other Users' Accounts
I just discovered tonight that I when I search for files, files in other user's accounts on this computer show up. I can open them too, but throwing them away requires that user's password. Searching the internet to see if this is a normal feature, I find questions about how to access other user's files and comments that even administrators cannot do this. Is this normal or abnormal behavior? Fast user switching is not enabled. Does anyone know where solid information can be found about the "barriers" between users' accounts? Thanks.
Mac mini, Mac OS X (10.5.8)