hey all. im just curious (and maybe a slight bit worried) about how long my macbook air should last on a full battery. it seems like it gets less and less all the time. its not my primarily used cmputer (i use my iMac mostly) but i still use my MBA most days whether it be in bed or on my travels to friends' houses etc. when i do use it ive usually got a socket handy so its always charging and when its in the house not being used, its pretty much always on charge which means the battery running out isnt a big deal but the few times i actually don't have the MBA on charge it seems to run out pretty quickly. i do tend to run a lot of programs, however. cheers.