After receiving my new iMac (base model 21.5") and setting up all up data etc. I happen to notice a white speck on a dark background, its not a dead pixel however, its larger and more like a large speck of dust or bits of fabric that would come off with poor cleaning cloths. Its between the glass and the screen panel. Now I've seen one I just couldn't help but inspect further and there are numerous bits placed all over the screen but both bottom corners have a considerable area where more of this has obviously settled there. It doesn't look like the dark dust patches others seem to have, the corners in particular show white area comprised of layers of this stuff built up. Particularly disappointing given I've got none of the other screen issues so many seem to have with no dead/stuck pixels, no grey band and no yellow tint or uneven backlight. I knew when I bought it that there was a considerable chance of a screen issue necessitating a return but I felt in away like so many who counter the screen problem arguments that crop up that with so many sold perhaps user forums like this are far more likely to have a more vocal minority expressing their problems but now I've experienced it myself and seen display models in PC World and Comet show issues I think its far more of an issue than some may like to admit. Now I'm left with a dilemma - return and replace or refund? I don't want to get into the cycle of constant returns/repairs so many seem to fall into with these iMacs in the hope of a 'perfect' screen that may not even exist. Sorry its more of a rant than anything else I guess the question here is really should I chance getting another and risk it perhaps being the same or even being worse because I'm a perfectionist at the best of times but now I've had one issue others would be inspected well inspected to make sure, or should I just get a refund and save the hassle of waiting in for deliveries and collections and buy a Mini or refurb Pro.