OK for the record, yes I am new to Mac. Thanks in advance for your patience. I would like to know if all my information on the hard disk is being placed on the server. I'm connected via Ethernet to the university network/internet right now. When I double click Macintosh HD and then "Network" on the sidebar, then "Servers" I find my computer on there "Macoltranes-ibook-g4.local" and with that all my stuff. Is my info being shared and if so, how do I stop it?