Hey y'all, So yesterday (the 5th) I had 5039 mAh on 678 or so loadcycles on a 21month old mac. today (the 6th) it suddenly plummeted to 3133 mAh on the same loadcycles/months. now i am somewhat skeptical of my loadcycles because my friends have all had white macbooks roughly as long as i have and their loadcycles are 124 and 170. but the computer says what the computer says. right now it says i have 100% battery life even though i have been videochatting for an hour without my charger. does anyone have any idea what is going on? could a simple calibration fix it, or do i need to go to the apple store? I have applecare so that's not a problem... also, does anyone have any tips on a way i could obtain a seemingly correct reading? system profiler/coconutbattery/the menu bar icon/the little indicator on the battery all seem to be saying 100%, but that can't be...can it? thanks in advance.