10.2.4 battery drama
DO NOT UPGRADE TO 10.2.4 till you read all about the battery life issues over at MacFixIt.com and at apple's discussion groups (specifically, here for ibooks).
I'm currently experiencing this issue where 10.2.4 basically kills your battery life. While details of HOW are sort of fuzzy, it is definite that it happened after I upgraded to 10.2.4.
In 3 minutes, I've lost 12% of my battery life. I'm told the problem only gets worse.
Apple, you fucks, what have you done to us? FIX THIS!