ok hear the deal when I started up my G4 today which has 700mb Ram onboard. and i had no app running it said that I was only using 320mb ram. Now when I open photoshop and then look at how mush ram I am using it said 567MB ram. when I close photoshop and now see how much ram I am using it said that I am using 520MB of ram, WTF? So why has OSX not released the memory any idea would be help-full.