Hi, I have a late 08 Alu Macbook that iv'e been using for some quite intensive tasks. When I bought it (Dec 08) I was just going to use it for some note taking at college and stuff like that. As time progressed I needed to for flash/illustrator/photoshop on the go which it handled but recently the need has arisen to use it for intense photoshop and aperture work. I use my i5 imac for heavy lifting when at home but I need something portable for on the road or at university. My macbook was fine until I installed aperture 3 which brings the whole system to a halt. I have come to the assumption that I need to upgrade my 2GB RAM but my question is, will 4GB me enough? Does anyone have any experience with this laptop 4GB RAM and aperture 3?? I know that aperture can sometimes really push my imac to the limit in terms of RAM and that has 8GB. Thanks.