Am I the only one who is experiencing this? Whenever I activate dashboard or expose, it comes up very laggy and slow, as if the computer has a weak graphics card. I am on my second MBP, as the first had several issues, with this being one of them. On my MacBook, which has a much weaker graphics card, it works like a charm every time. But on both of the new MBPs that I've owned, it does this and it is really bothering me. About 50% of the time it will go all laggy and the other 50% of the time it will work smooth and normal. Am I the only one?