So, I went to my local Applestore today and I noticed that on the display model 1.8 SSD DDR3 they had suffered from those horizonal lines that everybody's been talking about. If looking closely enough on the older Rev A it was possible to notice them there also. So that was enough for me to hold off any buying decision before taking the plunge. I noticed the Macbooks did not show those lines. Also at my local Applestore macrumors was not blocked and the machine that had the lines seemed to work with the 4 fingered swipe.