I have been using Lion since it came out and never had any problems with it. Then one day mission control just started lagging. Rather than smoothly scaling the windows into mission control like it used to, now mission control opens and the windows snap into place, and back upon closing mission control. There is a video below for reference. I looked at the video and it's not just a laggy video, thats how it actually looks. Also youtube cut off the beginning of the video for some reason, but you get the ideo. http://youtu.be/_D8Ed9kOeN0 Any ideas?