Hello all, first time poster here. My year and a few months old intel iMac has two vertical white lines on the screen. One about an inch and a bit from the center, and the other about the 3rd row of pixels in. The line goes from the top of the monitor to the bottom. I noticed the first one about a month ago, and another one has come this week. I only had the one year warranty. Doh. I have contacted an store than can deal with apple repairs, and they quoted me £400 to £500 just to replace the screen. I haven't contacted Apple at this point. Anyone else had this problem? and what should be my next step?