just got my powerbook about 3 weeks ago, wondering if anything i should keep my eyes on. a few question for everyone who have powerbook/ibook do you leave your powerbook/ibook on for a long period of time?(without sleep) go to sleep or shut down by the end of the day? keep powerbook plugged and battary out? or leave the battary in and plugged the same time? what kind of case you use to carry your powerbook/ibook? i used my powerbook like a desktop, so i use it about 4-8hrs a day. and most of the time i will leave it sleep over night instead of shutting down. and i let my powerbook plugged with the battary in at all times... since i dont have a case yet, im not taking my powerbook out YET. thanks for sharing. any additional tip would help too.