I have Lion set up to go to sleep and log out after 15 minutes of inactivity... When I try to wake the computer it shows my logged in screen as I left it, but all of the buttons on the keyboard are locked and make the little "key doesn't work horn sound." When I move the mouse it uncovers the login screen wherever the mouse is moving (I can see the gray background and my login icons), but only where the mouse moves. Then after about 30 seconds or so, the full login screen appears and I can click on the user, enter the password, and log back in. What is going on? Anyone else having this issue?