Hi all, long time reader, first time writer. I bought the macbook Air about a week ago and I've used it everyday so far. This thing is a serious beauty coupled with intense performance! I used an Asus N70 Sv before and I'm new to Macs... The battery, power and weight are what really caught my attention being that I'm a college student. So far I've only charged it twice (still at 10%!!) and my usage on it is intense! I can't say for sure how many effective hours I've used it, but its been on and off for more than a day! (sleep mode of course) I keep the brightness at 30-40%, which is plenty for my eyes and it doesn't cause them to burn. I recommend this machine to anyone who wants a fast, lightweight, ultraportable and overly sexy machine! Has anyone been having the same experience?