So I have a Macbook Pro 15" 2.66GHz from 2009. Over the past few years I've been having some minor problems such as programs quitting unexpectedly. I'm using FCP and Aperture 3 constantly. I'm running Mac OS X 10.5.8. 4GB DDR3.
Anyways, would it be beneficial to upgrade to 8GB of ram? Would it make much of a difference> Worth upgrading to Lion or Snow Leopard?