Sometimes my MacBook doesn't feeling like asking for a password after waking up from sleep. Most of the time it's good-- when I tap the keyboard to bring it back from sleep or the screensaver it wll ask me for my password. However, sometimes (like this morning, after being left alone for 7 hours) I tapped the keyboard and it went straight from sleep right in OSX without asking for my password. How can I fix this? Thanks. Just in case anyone asks, I made sure the "require password to wake this computer up from sleep and screensaver" is checked.