got my 20 inch imac yesterday, when i drag files from one folder to another, or the desktop, random lines going all the way across the screen flash and the logos of the files im dragging flash all over the screen. when i am on the web, and i scroll down, the lines show up again. called apple and after an hour of testing everything and not finding an answer , told me to bring it to an apple store.
any ideas?
any ideas?