Have my 13" uMBP for a week and love it. Upgraded to 4BG RAM and 250HDD. Seems like every hour or so, I get a beach ball and everything stops, iTunes, Entourage, browser. I am thinking there is some indexing going on (Spotlight) but I have no clue. Is anyone else experiencing this and if so, what to do about it. It is kinda driving me crazy.