I took ours back Monday 8/13/07; Problems same as others posted on this and similar threads; Just wanted to add this post to the data pool; The "gradient effect" was clear and obvious, looking straight on, no tilt relative to sight line, solid color background from one of Apple's included backgrounds. Played around with Expert settings in the Color Profile, tried different color profiles, took it to the Genius, and although I/we could get the desktop to look better, (ie could tell what the icons were in the Dock), it would still be darker at the top; I could maybe live with that, but then other apps would look weird, iTunes for example in the tan colored window at the top, the bottom of it would be this funky color, why? try to fix that and something else somewhere would be out of whack; Have a PowerMac 8500 bought new with 20" monitor, Rev A iMac bought new, G4 Cube with Studio display, bought new, Rev C iMac bought used, a couple of Quadras with smaller monitors bought used, a Mac Pro with 23" display, and I have never, ever, ever had to deal with the kind of thing as this, right out of the box and on first boot; the icons in the Dock were so washed out at first I could not tell what the TextEdit icon was for without moving the pointer over it; This was by default, on first boot up! There is no excuse for this, not from anyone, especially not from Apple. Well maybe some of those cheapo, low-end PC box makers, but Apple? On a brand new, significant product line like the iMac? I just have to echo my disappointment, both in the product, the experience, and with Apple. I think they do have a problem, either with the tech they chose to use, or some manufacturing problem, but this. just. aint. right. I am surprised they made it out like this, unless they decided to ship them anyway so they could hold to the release date and clean up the fallout later.