RAM question... I just got a 2.8 octo and it has the standard 2GB RAM. I've been monitoring my usage to see if I'd benefit from more. My active RAM hasn't gone above 1.3 GB or so, so I figured I was fine. Then I heard about page outs. I read the ins should be 10x the outs. Right now I have 531MB in and 386MB out. That makes me wonder what is the max amount of RAM the system will read as active? All 2GB? Also, people have mentioned seeing the beach ball when RAM isn't enough, which I have seen occasionally, but not a lot. Is that the only time you can see when computer is lagging? I know a lot of people can tell when the system is being sluggish, but I can't yet because I'm coming from a PowerBook G4 so there's no way to compare. I'm trying to learn how this all works, so please don't just tell me to buy more RAM. Thanks for your help.