Mac OS X 10.6: Deleting a user account
If you have an administrator account, you can delete user accounts on your computer that are no longer needed.
When you delete a user account, you can save the user’s home folder, which contains the user’s files and settings, or delete it.
Important:If the user’s account is encrypted (FileVault is turned on), turn off FileVault for the user before you attempt to delete the account.
To delete a user account:
Choose Apple menu > System Preferences and click Accounts.
Click the lock icon to unlock it, and type an administrator name and password.
Select the user account you want to delete, and then click the Delete (-) button.
Click OK to save the user’s files on the computer, or click Delete Immediately to remove the user account and all the user’s files.
If you saved the user’s files, they are stored in a disk image in the Deleted Users folder, in the Users folder.
To see the saved files, double-click the disk image in the Deleted Users folder.
To delete the user’s files, drag the disk image to the Trash.