Yup mine is uneven as well, its time like this i miss my G4. The display isnt as bright but it was even and un-grainy (no "organic" look)
Mine basically feels like someone painted a think grey L on it. In other words. the left side and bottom area are dark and its quite visible. Not grossly but visible nonetheless. Sigh, its a great machine but the little niggles......
You have a flawed screen, and should get a replacement!
Mine is glossy, the lighting is even throughout, no pixel problems - flawless.
Can you actually "feel" a difference on the screen? As in a surface flaw?
iBorg