Hi, So is it ok to leave the October 2008 Unibody Macbook Pro on for extended periods like a few weeks to even a month? Like say you use it on battery, when it dies you plug it in, once its fully charged you keep using on battery. Basically you keep it in sleep when you're not using it instead of turning it off! But once a month you turn it off to calibrate the battery. Is this ok to do? Will this hurt the MBP in anyway? Your thoughts guys? Thanks!!