Hey all, I have a late 2008 model Black Macbook, the ones that were out right before the aluminum uni-bodies. Anyway, I just put in a 4GB RAM upgrade. Everything is working faster and all, I was just wondering though. I have Geektool running to show me my RAM and CPU usage. After starting up with 2GB RAM, my Macbook would idle around 450mb RAM usage. After the upgrade, this went up to 730-750mb RAM usage after a cold start and a reboot. I was a little perplexed by this. Can anyone shed some light on this for me? Is this normal? Thank you!