I upgraded to Maverick when it came out and then it was followed up about a week later with an update to iPhoto. I did notice the computer running a little slower once I installed Maverick but wasn't to concerned as I figured it would get fixed pretty quickly. Once the new iPhoto was installed it made things much worse. Now I can't even import pictures from my camera as iPhoto never starts when I plug my camera in. I am going to call apple care tomorrow but wanted to see if anyone experienced this and what was a result of what you did.