Hello guys. I was working on my rmbp the other night and I used iphoto to editi some of my photos, browse them, zoom in out for details etc etc. After about 40 mins of working with iphoto I checked activity monitor and I saw that iphoto was using 1GB of system RAM! Is that considered normal behavior for iphoto? I really could not believe that after 30 mins the application required so much RAM... I mean what would happen if I continued working for like 2 hours? It could go to 2GB ram?? Please help me understand how this works because i really scratch my head around this.