Hi, Does anyone seem to know the problem with having blue vertical lines on your iMac display? In the beginning, the lines only showed occasionally, but now, the line almost always show up. However, the lines fades in and fades out when the screen is in motion, for example, when i drag and manoeuvre a window around it. The window would almost feel magnetic, if you know what i mean. Also, from my testing, the line seem to disappear when i turn up my fans, and tend to reappear when the temperature gets too hot. I do not think it is the display, as when the line is not there, it displays pixels perfect. To me, it sort of feel like a connection issue. I want to take it to get it fixed, anyone know which part is fault?