Hello all, I have a Macbook from Late 2008, around 2.4 Ghz, which I customized with 4 GB of RAM. Today it is 6 years old, the battery is dying, and the computer is overall slow. I am wondering: is it worth refreshing the hardware or just buying a new Mac altogether? By refreshing the hardware, I would mean changing the battery, perhaps changing the RAM or the hard drive if you guys tell me these things' performance deteriorate with time? And then obviously resetting the system to as new (e.g. kind of reformatting). What do you think?