Hi all, I did an 10.8.3 update for my retina and now the UI lag is terrible. I keep single app windows on different spaces, and switch to them by clicking dock icon. Transition between spaces is terribly laggy. As far as I remember it was "all right" in 10.8.2, it wasn't clean transition but I learned how to live with it. Now it's just awful. I have 2 15" retinas at home, same on both computers. I switched to non HDPI resilution, which is kind of blurry compared to HDPI but transitions are as they should be, no lag, there is no scalling so everything works perfectly. I really like that computer, but this lag is driving me crazy. I did smc reset, nvram reset etc. No improvement. Was wondering if any of you guys have same sympthoms.