Hey everyone, first post here, and also a Mac noob, so I apologize if this is in the wrong section I am trying to enable file sharing in OS X 10.6 Snow Leopard. I intend to share files on my MacBook with other Windows and Linux computers on my home network. From what I understand, the procedure is as follows: 1) Open up System Preferences and click on Sharing under Internet & Wireless 2) Click on File Sharing on the left, and then add a folder to be shared. After doing this, three Users appear on the right: System Administrator, Administrator, and Everyone (all have read/write access). 3) I want my folder to be password-protected and accessible only to specific users, so I change the permissions for Everyone to No Access. I then add a user (sharing only account) with a specified username and password. 4) I click on Options and select the "Share files and folders using SMB (Windows)", and enable SMB sharing for the user that I created in the previous step. I click on Done, and exit System Preferences. After performing the above steps, I go to my Linux computer and attempt to connect to the shared folder on my Macbook. I was surprised to be able to access the folder without being prompted for a username and password. The same thing can be seen on my Windows computer. I went back into Systems Preferences/Sharing on my MacBook, and noticed that the user that I had created has disappeared from the Users list, and all the permissions have been reverted to the default Read & Write Access (including Everyone, which I had changed to No Access earlier). I tried the above procedure again and still ended up with the same result. Why are the user permissions not being saved? Has anyone here experienced a similar issue?