Hi. I have a macbook pro and I do a lot of work on it. It has 3GB RAM with a core 2 duo processor and mac os 10.6.3. The problem is that it is becoming continuously slower. Sometimes scrolling in web sites is impressively slow (with the colour wheel spinning). Flash performance is horrible as well. Any idea what I can do to make it faster without having to reformat it? thanks a lot for your ideas.