As of the other day, my iMac (2.1) developed an odd but subtle screen effect. My screen now has a slight 'screen' effect on it? Anybody who uses print will know what i mean. The colours now appear to be made from small dots, a bit like newspaper print etc. Its very subtle, but i can really see it in flat colours in illustrator etc. The problem effects the whole screen no matter what software im using. Effects the dt etc. Anybody???? Cheers A.