hey guys, i've been wanting to upgrade to a 500gb 5400rpm drive since last yr but i didn't because i thought there might be a 720gb around the corner. i've yet to see a 720gb drive, do you guys know where i can get one? i have an early 08 MBP. another thing is, why does my internet sharing always reset when i turn my computer off? its annoying to have to turn on sharing every time i boot up.