I have to say that I have noticed the same thing, every once in a while the contrast acts like it is too low, just enough to see it, but thats it. so I go to adjust it, and its set where I left it, and as soon as i change it either up or down it fixes itself. I set it higher than what I had before the other day so I will let you all know if i notice a difference. I believe that it was set at about 40% originally, and i moved it to 45%. hope this helps
