whenever i click the application folder in my dock. sometimes grid view appears choppy, like i can distinguish 2 frames for it to show up. If i click the applications folder multiple times, eventually stacks appears instantly with no lag. Is this my computer? i don't think it can be because it is a week old. 2.93 ghz imac. Other animations appear choppy sometimes as well, like expose, or "show desktop" hot corner. It's not like i have a lot of programs open, just safari and adium. also about my hardrive capacity, i'm supposed to have a 650 gb hardrive, but how come when i do "get info" on macintosh HD, it says the maximum capacity is 639 gb? what happened to the other 11 GB?