Hi all: I have the late 2010 MBA with 1.86 GHz/4 GB. All of my iPhoto data is stored on a network drive. Whenever I use iPhoto, it is just dreadfully slow. Partly, I'm sure this has to do with the volume of photos I have (almost 24,000). I just started up iPhoto now as I started this thread and it took about two minutes to boot up. Now that it's up, it's once again stuck in spinning rainbow mode and shows as not responding in Activity Monitor for big chunks of time. It will do this over and over again, pretty much any time I click on anything. I was thinking of switching to Lightroom or Aperture, but wasn't sure if this will make things better, worse or just more of the same. Can anyone offer and opinions or suggestions?