Darkness in the corners, spots across the screen, audio lip sync issues...
And the poster that suggested to set your computer resolution to below 1920 x 1080 to "fix" the dark corners... that is not a workaround, but an unacceptable compromise. There is a NATIVE RESOLUTION for LCDs and that's where it should be set.
People on this board that think the picture quality is great need to compare it to other panels. I have three other tvs, 2 LGs and 1 Philips, none of them particularly high-end. They are all superior to this Sharp.
Anyway, my solution to fix all these issues: I'm returning this set to Best Buy. Problems Solved! Not worth the headache hoping for firmware updates from Sharp.
Maybe you should of got the 42", I'm not having any of those problems.