I just got a new 2011 15" MBP and I noticed just after a few hours I got serious eye fatigue from using it. Curious, I checked the panel maker: LP154WP4-TLA1(9CA3) I then checked the panel maker on my older 2010 15" MBP which I had no problems with eyestrain for almost a year now: LP154WP4-TLA1(9CA3) Exactly the same panel in both, yet eyestrain with the 2011, and a different white point to boot (slightly yellower, milkier, dingier). I then went to http://www.lagom.nl/lcd-test/inversion.php and discovered to my horror than the 2011 MBP has really *bad* pixel walk on 4a and 4b, whereas the 2010 MBP has virtually none! Same panel model, but different pixel walk behaviors and eye fatigues. I'm wondering if any other 2011 MBP owners get the same pixel walk on that page, and whether a replacement screen would help at all.