I am running LR3 on an iMac with 12GB of RAM and almost 70% of my HD is available. I have noticed that LR has progressively gotten slower to work with. My biggest beef is simply viewing images within the Library, generally for the purpose of culling. I often create 1:1 previews to expedite rendering when zooming to check for critical focus. This helps but there are many times when it still takes a while before the images de-pixelates.


I am not a power user so overly technical suggestions may be over my head. Is there anything that I am overlooking? I thought that the combination of RAM and HD utilization heavily influenced processing speed on such applications?