More to say... You may have set restrictions on a folder(s), so take a look at these "Help" notes.
Setting permissions for disks, folders, and files
To control access to your important information, Mac OS X automatically sets permissions for disks, folders, and files. You can change these permissions for an item using the Info window in the Finder.
Mac OS X provides distinct permissions for three types of users:
The "owner" of the item, which is usually the name of the person who created the item, or yourself
Any member of the group assigned to the item by Mac OS X
Any other user with access to the computer
There are four levels of permission:
Read & Write allows a user to open the item to see its contents and change it.
Read Only allows a user to open the item to see its contents, but not change the contents or copy them.
Write Only makes a folder into a drop box. Users can copy items to the drop box, but cannot open the drop box to see its contents. Only the owner of the drop box can open it to take items out.
No Access blocks all access to the item so that users can't open the item, change its contents, or copy its contents.
To change permissions for a disk, folder, or file:
Select the item you want to set permissions for, then choose File > Get Info and click Ownership & Permissions, if necessary. If you want to set permissions for multiple items at once, select them, and as you hold down the Control key choose File > Get Summary Info.
Choose a permission for yourself from the pop-up menu. If the menu is dimmed, you don't have permission to change this setting.
To change permissions for the owner, group, or others, click Detail. If necessary, click the lock icon and, when prompted, enter the name and password of an administrator user of your computer.
Choose permissions for each type of user from the Access pop-up menus.
The pop-up menu at the top of the Ownership & Permissions pane tells you the access privileges you have for the selected item. If you are the owner, you can use this menu to change your access privileges.
If you want to apply the same permissions to every item contained in the selected folder or disk, click "Apply to enclosed items".
If you want to ignore permissions for a volume (that is not a startup volume), click the checkbox.
See also
access privileges
Regards,
MBP-15"/2.16/7200/W8612... Mac OS X (10.4.7) G4 Tower (OS 9/10), Dell 620 WorkStation (XP Pro), Gateway P4 (XP Home)