Yes, I have "cloudiness" of light leaks. Not at the four corners, but "patches" of white leaking out of the screen in a couple of places. In a dark room, I notice it (dark movie scenes, movie credits, 4 by 3 commercials, etc.), but if there is much light at all in the room, I won't notice at all.
I turned down the settings (THX test patterns on THX-certified movies) and it improved to where it is now.
It really is a very nice set.