So I've had my MacBook for closing in on 5 years now and I've managed to stick with the stock 1 GB RAM all this time. Things have been getting pretty sluggish - here's a picture from mid-afternoon on Sunday after a bunch of Chrome browsing, viewing in VLC, and various other programs. I'm still running Leopard 10.5.8. I just ordered 4 GB of RAM off OWC. Will I see a pretty significant boost in performance or at least decreased sluggishness from multi-tasking? Also would Snow Leopard be a reasonable upgrade? I don't want to upgrade for the sake of upgrading if it'll decrease performance. We upgraded to Lion at work and I really have no intention of putting that on this laptop, probably ever.