I've had a problem with Lion for a while now and it's starting to annoy me because I can't get it sorted myself. The problem is with almost all of the system animations; Mission Control and Launch Pad especially. Mission Control doesn't open smoothly anymore - it just "pops" in to place and for example Launch Pad is so laggy sometimes it's almost impossible to use. Also when using full screen apps, when you move the cursor to the top of the screen, the animation really lags when the toolbar comes down. These problems didn't come straight away with Lion, they came after a few weeks of use. Then I tried doing a clean install. It worked. For a few days at least, until the exact same problems came back. Now I tried installing 10.7.2. but it didn't help. My Mac is a mid '09 13" MBP with a 2.26 GHz processor. Any ideas? This problem is really getting on my nerves and it makes Lion pretty awful to use.