I am using iStat Pro and I have 512MB RAM on my MBP. It says that 85 is being used for Wired, 202 is being used for Active, 217 is being used for Inactive. Which means I only have like 8MB left of memory. What is the Wired and inactive being used for? The only applications i have open are Safari and MSN Messenger. Is it time for me to upgrade to 2GB RAM? Because right now it is quite sluggish. I cant even open Garage Band yet alone make music on it.