Hi, this may seem like a silly and an easy fix and I really hope it is, but when I click on my system preferences and go on security then on general, when i click the option require password to wake this computer from sleep or screen saver it doesn't work. I don't know whether any of my other preference settings have accidentally canceled it out or somehing is genuinely wrong - but these are my current settings for the things I think my be affecting it: in security/general: *require password to wake this computer... is ticked. *disable automatic login is tick *require password to unlock system preferences pane is not ticked *log out after ___ minutes of inactivity is not ticked. In energy saver for power adapter: *the computer sleeps 10 minutes * the display sleeps at 2 minutes In energy saver for battery: it is identical and my screen saver comes on in 4 minutes. there are also attachments you can look at if they work I don't know what I have done wrong but any help you can give will be infinitely helpful.