Aside from IR, does anyone experienced graphic glitches in the form of "striping"? I have it with Solid Works CAD files (when rotating the 3D model) and with scrolling through some websites. It looks as the screenshot below.
I have a feeling this may be the HD4000 as I have the same issue on my MBA and I noticed it on my friends' HD4000 MacBooks as well (although none of them noticed it until I pointed it out).