I bought it from Abed Tahan :)
The slight clouding is seen from a low angle, if you face the TV it will vanish, apart web browsing on the TV wish I do once per month this thingy is not visible at all in other colors meaning movies and games.
If it get worse right before my warranty finish then of course I will take it back, the thing is that we tried the TV in their workshop and it was perfect there.
Here a photo of the screen with good white background
And now the same photo but in negative (inverted white and black)