A few days ago my lock screen on OSX Lion started behaving oddly. The entire screen has shrunk itself down to about 3/4 of the screen size, although it all goes back to normal once I enter my password. My resolution is set correctly. Here's a bad picture, but you get the idea: See the black bar at the bottom of the screen? There's one on the right side too, you just can't see it.
Has anyone else encountered this? Is there a solution?