I was just changing my screen saver to the forest screen saver and noticed very visible horizontal scan lines in the preview window. I checked the other screen savers in the preview window and they all had vertically moving horizontal scan lines. There are also some vertical artefacts in the preview window. This is not visible when the screen saver is on in normal mode outside the preview box. Hmm...something fishy going on. Don't want to start a scare here, just want to see if others have the same thing?