Have just installed 1Gig of Ram in my TiG4 500 Powerbook and am still getting poor performance when using large 100Mb+ files in Photoshop 6. I am running 9.2, have given Photoshop 700,000k and have a second Sony 20" CRT monitor. Any tips on how to optimise my system? No matter how basic. I was expecting things to improve with an extra 512. Screen redraw is very slow. Many thanks.